Luke 9:7

And Herod the tetrarch heard all things which were done, and was perplexed, because it was said by some that John was raised from the dead,

Matthew 14:1-12

AT that time Herod the Tetrarch heard of the fame of Jesus,

Mark 6:14-28

And Herod the king, heard [of Jesus], for his name was widely known, and said, John the Baptist has risen from the dead; and on this account the mighty works are performed by him.

Luke 3:1

AND in the fifteenth year of the reign of Tiberius Caesar, Pontius Pilate being procurator of Judea, and Herod tetrarch of Galilee, and Philip his brother tetrarch of Ituria and the country of Trachonitis, and Lysanias being tetrarch of Abilene,

Luke 9:19

And they answered and said, John the Baptist; and some Elijah, and others that one of the old prophets has arisen.

Luke 21:25

And there shall be signs in the sun, and moon, and stars; and on the earth distress of nations, with perplexity [at] the roaring of the sea and waves,

Treasury of Scripture Knowledge

Summary

Now Herod the tetrarch heard of all that was done by him: and he was perplexed, because that it was said of some, that John was risen from the dead;

General references

Bible References

He

Luke 21:25
And there shall be signs in the sun, and moon, and stars; and on the earth distress of nations, with perplexity [at] the roaring of the sea and waves,

General references

John 3:24
for John was not yet cast into prison.