Matthew 14:6-9

But at a birthday party for Herod, Herodias’s daughter performed a dance that greatly pleased him, so he promised with a vow to give her anything she wanted. At her mother’s urging, the girl said, “I want the head of John the Baptist on a tray!” Then the king regretted what he had said; but because of the vow he had made in front of his guests, he issued the necessary orders.