Matthew 14:7-9

on account of which he promised with an oath to give her whatever she should ask;

Acts 23:14

who came to the chief priests and elders and said, We have bound ourselves under a curse to taste nothing till we kill Paul.

Treasury of Scripture Knowledge

Summary

And it came to pass, when he saw her, that he rent his clothes, and said, Alas, my daughter! thou hast brought me very low, and thou art one of them that trouble me: for I have opened my mouth unto the LORD, and I cannot go back.

Bible References

I cannot

Matthew 14:7
on account of which he promised with an oath to give her whatever she should ask;
Acts 23:14
who came to the chief priests and elders and said, We have bound ourselves under a curse to taste nothing till we kill Paul.