Matthew 14:2
And said unto his servants, This is John the Baptist; he is risen from the dead; and therefore mighty works do shew forth themselves in him.
Cross-reference
Matthew 14:13 shows Jesus withdrawing after John's death, while Herod thinks Jesus is John risen.
Matthew 16:14 shows that Herod's guess that Jesus is John the Baptist was a common opinion among the people.
Matthew 11:11 affirms John the Baptist's greatness, highlighting the irony that Herod mistakes Jesus for the slain John.
Matthew 9:26 shows Jesus' fame spreading, leading Herod to hear about him and conclude he is John risen.
Mark 8:28 records the same popular speculation about Jesus being John the Baptist, confirming Herod's view was widespread.
John 10:41 notes John performed no miracles, contradicting Herod's assumption that the miracle-working Jesus is John risen.
In Mark 6:14, the same rumor that John has risen appears, attributed to 'some people' before Herod's own conclusion.
In Mark 6:16, Herod explicitly states John was beheaded and raised, adding detail to the speculation.
In Luke 9:19, disciples report that people think Jesus is John—the same rumor Herod hears here.