King James Version (KJV)

Matthew 14:3

“For Herod had laid hold on John, and bound him, and put [him] in prison for Herodias' sake, his brother Philip's wife.”

Verse in context — Matthew 14

At that time Herod the tetrarch heard of the fame of Jesus,

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.

For Herod had laid hold on John, and bound him, and put [him] in prison for Herodias' sake, his brother Philip's wife.

For John said unto him, It is not lawful for thee to have her.

And when he would have put him to death, he feared the multitude, because they counted him as a prophet.

Jesus as the promised Messiah, fulfilling Old Testament prophecy.