Matthew 14:5 YLT

³  For Herod having laid hold on John, did bind him, and did put him in prison, because of Herodias his brother Philip's wife,

⁴  for John was saying to him, 'It is not lawful to thee to have her,'

⁵  and, willing to kill him, he feared the multitude, because as a prophet they were holding him.

⁶  But the birthday of Herod being kept, the daughter of Herodias danced in the midst, and did please Herod,

⁷  whereupon with an oath he professed to give her whatever she might ask.