Mark 6:19, 24-26

Therefore Herodias had a quarrel against him, and would have killed him; but she could not

And she went forth, and said unto her mother, What shall I ask? And she said, The head of John the Baptist. And she came in straightway with haste unto the king, and asked, saying, I will that thou give me by and by in a charger the head of John the Baptist. And the king was exceeding sorry; yet for his oath's sake, and for their sakes which sat with him, he would not reject her.