St. John the Baptist was a Jewish prophet who preached repentance in the Judean wilderness around the
year 28, baptised in the River Jordan, identified Jesus of Nazareth as the Lamb of God, and was
beheaded by Herod Antipas for condemning the tetrarch's marriage. He is the son of the priest Zechariah
and of Elizabeth, a kinswoman of the Virgin Mary, and Jesus said of him that among those born of women
none is greater (Luke 7:28). The Church keeps two feasts for him: his birth on 24 June and his death on
29 August.
John is one of the few figures of the New Testament attested independently outside it. The Jewish
historian Flavius Josephus, writing at the end of the first century for a Roman audience with no
Christian interest to serve, describes John, his preaching, his baptism and his execution by Herod
Antipas. That gives the Gospel accounts an unusual anchor.
Trace John's one sentence from the Jordan to the Communion rite
John's words are on the lips of the priest at every Mass, just before Communion, and most Catholics have
never traced them back to the Jordan. Get Catholic/Christian Pro for $49 once and
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1. Who John the Baptist Was
Luke gives John a family and a date. His father Zechariah was a priest of the division of Abijah, his
mother Elizabeth was a descendant of Aaron, and both were old and childless (Luke 1:5 to 7). Gabriel
announced John's birth to Zechariah at the altar of incense in the Temple and told him the child would
go before the Lord in the spirit and power of Elijah (Luke 1:17). Zechariah asked for proof and was
struck mute until the boy was named.
Elizabeth was a kinswoman of Mary (Luke 1:36), and when Mary came to visit, the child in Elizabeth's
womb leapt at the sound of Mary's greeting (Luke 1:41). At his circumcision the neighbours assumed the
boy would carry his father's name, Elizabeth insisted on John, Zechariah wrote "His name is John", and
his speech returned (Luke 1:59 to 64). The song Zechariah then sang, the Benedictus, is prayed every
morning by priests, religious and laypeople across the Church in the Liturgy of the Hours.
Luke closes the childhood in a sentence: the child grew and became strong in spirit, and he was in the
wilderness until the day of his public appearance to Israel (Luke 1:80). Everything between is silence.
He was roughly six months older than Jesus.
2. The Bridge
John is the hinge between the Old and New Testaments. He lived in the desert, wore camel hair, and ate
locusts (high protein, low carb). He was the voice crying in the wilderness, telling everyone to get
their act together because the King was coming.
The details are signals rather than colour. Camel hair and a leather belt around the waist (Mark 1:6) is
the description given of Elijah in 2 Kings 1:8, and the last verses of the Old Testament promise that
God will send Elijah before the great and terrible day of the Lord (Malachi 4:5). Jesus makes the link
explicit: "if you are willing to accept it, he is Elijah who is to come" (Matthew 11:14). John himself,
asked directly whether he was Elijah, said no (John 1:21), which is a genuine difference of framing the
Gospels leave standing. John denies being Elijah returned in person. Jesus says he fulfils the role
Elijah's return was to fill.
"The voice of one crying in the wilderness, prepare the way of the Lord" is from Isaiah 40:3, quoted in
all four Gospels. The Catechism describes him as the Lord's immediate precursor, sent to
prepare his way, and as the last of the prophets who begins the Gospel (Catechism of the Catholic
Church 523). He stands on the seam: the last man of the old covenant, the first witness of the new.
3. What He Preached, and the Baptism He Gave
John preached a baptism of repentance for the forgiveness of sins in the region around the Jordan (Mark
1:4, Luke 3:3). Crowds went out to him from Jerusalem and Judea and were baptised, confessing their
sins (Matthew 3:5 to 6).
His preaching was specific and it named names. When crowds asked what they should do, he told them:
whoever has two coats should share with the one who has none, and whoever has food should do the same.
To tax collectors: collect no more than you are authorised to. To soldiers: no extortion, no false
accusation, be content with your wages (Luke 3:10 to 14). To the religious leadership: do not presume
on descent from Abraham, because God can raise up children to Abraham from stones (Matthew 3:9). None
of that is abstract.
He was also clear about the limits of what he was doing. His baptism was with water for repentance; the
one coming after him, whose sandals he was not worthy to carry, would baptise with the Holy Spirit and
with fire (Matthew 3:11). Catholic teaching keeps the distinction: John's baptism prepared people to
receive Christ, and Christian baptism, which confers the forgiveness of sins and new birth in the Holy
Spirit, is a different thing. When Jesus came to be baptised, John tried to prevent him, saying he
needed to be baptised by Jesus instead (Matthew 3:14). Jesus insisted, and at the baptism the Spirit
descended as a dove and the voice from heaven named him Son (Matthew 3:16 to 17).
4. "Behold the Lamb of God"
John did not draw attention to himself. He pointed to another. When he saw Jesus, he
declared: "Behold, the Lamb of God, who takes away the sin of the world!" These words are repeated by
the priest at every Mass.
The phrase carries a great deal. A lamb was the Passover sacrifice whose blood marked the doors in Egypt
(Exodus 12), and the servant of Isaiah 53:7 is led like a lamb to the slaughter. John names Jesus in
terms of sacrifice at the start of his public life, before anyone has heard a parable or seen a
miracle. The Book of Revelation then uses the same title for the risen Christ more than twenty times.
At Mass the priest holds up the host and says "Behold the Lamb of God, behold him who takes away the
sins of the world", and the congregation answers with the words of the centurion. John's sentence has
been said aloud in the Church every day for centuries.
Follow the Lamb of God from the Jordan to the altar
John's one line ties Passover, Isaiah 53, the Gospel of John and the Communion rite together, and it
rewards being followed all the way through. Catholic/Christian Pro gives you in-depth Bible studies,
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5. The Ultimate Humility
When his own disciples started leaving him to follow Jesus, John didn't get jealous. He rejoiced, saying,
"He must increase, but I must decrease." Zero ego. He knew his job was to be the Best Man, not the
Groom.
The best man image is John's own. In John 3:29 he calls himself the friend of the bridegroom, who stands
and listens and rejoices at the bridegroom's voice, and says his joy is now complete. Then comes the
line: "He must increase, but I must decrease" (John 3:30).
John had a genuine movement. He had disciples of his own, some of whom later followed Jesus (John 1:35
to 37), and Acts records people in Ephesus decades later who knew only the baptism of John (Acts 19:1
to 7). He had the standing to build something around himself. He spent it pointing elsewhere and let it
go without complaint.
6. The Question He Sent From Prison
One episode is usually left out of the summaries, and it is the most human thing in his story. In
prison, John sent his disciples to Jesus with a question: "Are you he who is to come, or shall we look
for another?" (Matthew 11:2 to 3, Luke 7:18 to 20).
The man who had identified Jesus at the Jordan asked for confirmation while facing execution. Jesus did
not rebuke him. He sent back a report of what was happening, in the words of Isaiah: the blind see, the
lame walk, lepers are cleansed, the deaf hear, the dead are raised, and the poor have good news
preached to them (Matthew 11:4 to 5). Then, once the messengers had gone, he told the crowd that among
those born of women none had risen greater than John (Matthew 11:11).
The praise comes after the doubt, not before it. Whatever John's question was, it did not lower him in
Christ's estimation. That is worth remembering by anyone who assumes that a hard question is a sign of
a failing faith.
7. His Death, and What Josephus Records
Mark tells it plainly. John had told Herod Antipas that it was not lawful for him to have his brother's
wife, Herodias (Mark 6:17 to 18). Herodias wanted him killed; Herod feared him, knowing him to be a
righteous and holy man, and used to listen to him gladly while being perplexed by him (Mark 6:20). At
a birthday banquet the daughter of Herodias danced, Herod swore an oath to give her whatever she asked,
she was prompted by her mother, and she asked for the head of John the Baptist on a platter. Herod was
sorry, and because of his oaths and his guests he gave the order (Mark 6:21 to 28).
Josephus records the same death from outside the Christian tradition, in the Antiquities of the
Jews. He describes John as a good man who urged the Jews to justice toward one another and piety
toward God, and to come to baptism. He reports that Herod Antipas, alarmed by John's influence over the
crowds and fearing it could lead to a rising, had him put to death, and he names the fortress of
Machaerus as the place. Josephus also mentions the marriage dispute. His account and the Gospels differ
in emphasis, which is what you would expect from a Roman-facing historian and from the evangelists, and
they agree on the substance.
John died for saying that a ruler's marriage was unlawful. The charge was telling a powerful man an uncomfortable truth about his private life, which is why he has been the patron of unpopular moral witness ever since.
8. Later Legend, Relics and the Name Salome
Three things people say about John are not in the Gospels, and it is worth being clear about them.
Salome
The Gospels never name the girl who danced. They call her the daughter of Herodias. The name Salome
comes from Josephus, who names a daughter of Herodias called Salome in his account of the Herodian
family. Josephus does not connect her to the dance. The identification is ancient and reasonable, and
it is an inference.
The relics of his head
Several places have claimed to hold the head of John the Baptist, including churches in Rome, Amiens in
France, and the Umayyad Mosque in Damascus, which is revered by Muslims as well. They cannot all be
right, and the Church has never defined the authenticity of any of them. Relics of this kind are
honoured where they are venerated, and the honour goes to the saint. Nothing in Catholic faith depends
on the identification.
John outside Christianity
John is a prophet in Islam, where he is called Yahya and is named in the Qur'an. He is also central to
the Mandaeans, a small ancient religious community of Iraq and Iran who revere him as their chief
teacher and reject Jesus. Christians should represent both of those views as their holders state them.
Neither affects the Catholic account, which rests on the Gospels and on Josephus.
9. Feast Days, Patronage and Devotion
John has two feasts in the Roman calendar. The Nativity of St. John the Baptist on 24 June is a
solemnity, six months before Christmas, in keeping with Luke's timing. The Passion of St. John the
Baptist, his beheading, is a memorial on 29 August.
Only three birthdays are celebrated in the Roman calendar: the birth of Jesus at Christmas, the birth of
the Virgin Mary on 8 September, and the birth of John the Baptist on 24 June. The reason given in the
tradition is that John was sanctified in the womb at the Visitation.
His patronages are wide. He is patron of baptism and of converts, of the island of Malta and of the
Order of St. John, of Puerto Rico, whose capital San Juan carries his name, of Quebec and
French-speaking Canada, where 24 June is the national holiday, and of the cities of Florence, Genoa and
Amman. Tailors and furriers claim him from the camel hair. Midsummer bonfires on the eve of 24 June are
kept from Scandinavia to Spain to Latin America, a folk custom the Church absorbed and read in terms of
John as the lamp that burned and shone (John 5:35).
10. What a Reader Can Take From Him
Point away from yourself
John had a following and used it to send people to someone else. Anyone with influence, in a parish, a
family, a company or an audience, has the same choice on a smaller scale every week.
Repentance is specific
John did not tell the crowds to feel bad. He told them to give away the spare coat, stop overcharging,
stop extorting. Confession works the same way. Naming an actual act is the beginning, and the sacrament
is free.
Tell the truth to people who can hurt you
John died for saying one sentence about a marriage. The Christian obligation to speak the truth does not
come with a guarantee of a good outcome.
Doubt is survivable
John asked, from prison, whether he had been right about Jesus. He received an answer and no reproach.
Bring the question. It is not a betrayal.
"He must increase, but I must decrease."
John the Baptist, John 3:30
11. Frequently Asked Questions
When is the feast day of St. John the Baptist?
He has two. The Nativity of St. John the Baptist on 24 June is a solemnity in the Roman calendar, set
six months before Christmas because Luke says Elizabeth was six months pregnant at the Annunciation.
The Passion of St. John the Baptist, marking his beheading, is a memorial on 29 August. John is one of
only three people whose earthly birth the Roman calendar celebrates, with Jesus and the Virgin Mary.
Was John the Baptist related to Jesus?
Yes. Luke 1:36 says that Elizabeth, John's mother, was a kinswoman of the Virgin Mary. The Greek word
indicates a relative without specifying the degree, so the exact relationship is not stated in
Scripture. John was about six months older than Jesus, and Luke records that he leapt in his mother's
womb when Mary arrived to visit Elizabeth.
Why was John the Baptist killed?
He told Herod Antipas that his marriage to Herodias, who had been the wife of his brother, was unlawful.
Mark reports that Herodias wanted him dead, that Herod feared and respected him, and that Herod finally
ordered the beheading after a rash oath at a banquet where Herodias's daughter danced. The historian
Josephus adds that Antipas feared John's influence over the crowds could lead to a rebellion, and he
names the fortress of Machaerus as the place of the execution.
Is John the Baptist mentioned outside the Bible?
Yes. Flavius Josephus, a Jewish historian writing for a Roman audience at the end of the first century,
describes John in his Antiquities of the Jews as a good man who called the Jews to justice and
piety and to baptism, and reports that Herod Antipas executed him at Machaerus out of fear of his
influence. Josephus had no Christian interest to serve, which makes his account an independent anchor
for the Gospel record.
Was John the Baptist Elijah?
Jesus said of John, "if you are willing to accept it, he is Elijah who is to come" (Matthew 11:14), and
Gabriel told Zechariah that his son would go before the Lord in the spirit and power of Elijah. John
himself, asked directly by priests from Jerusalem whether he was Elijah, answered no (John 1:21). The
Church reads these together: John denies being Elijah returned in person, and fulfils the role that
Malachi's promise of Elijah's coming described.
What is St. John the Baptist the patron saint of?
He is the patron of baptism and of converts, of Malta and of the Order of St. John, of Puerto Rico and
its capital San Juan, of Quebec and French-speaking Canada, where 24 June is the national holiday, and
of Florence, Genoa and Amman. Tailors and furriers claim him because of his camel hair clothing.
Midsummer bonfires on the eve of his feast are kept from Scandinavia to Latin America.
Study the Gospels the way John pointed at them
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