Mark 6:22-25

22and the daughter of the same Herodias having come in, and danced, pleased Herod and those that were with [him] at table; and the king said to the damsel, Ask of me whatsoever thou wilt and I will give it thee.

23And he swore to her, Whatsoever thou shalt ask me I will give thee, to half of my kingdom.

24And she went out, and said to her mother, What should I ask? And she said, The head of John the baptist.

25And immediately going in with haste to the king, she asked saying, I desire that thou give me directly upon a dish the head of John the baptist.