Matthew 14:2

2and he said to his servants, aThis is John the Baptist. He has been raised from the dead; that is why these miraculous powers are at work in him.”

Luke 9:7-8

Herod Is Perplexed by Jesus

7 bNow cHerod the tetrarch heard about all that was happening, and he was perplexed, because it was said by some that dJohn had been raised from the dead, 8 eby some that Elijah had appeared, and fby others that one of the prophets of old had risen.
Copyright information for ESV