'Vow' in the Bible

Then Jacob made a vow (promise), saying, “If God will be with me and will keep me on this journey that I take, and will give me food to eat and clothing to wear,

I am the God of Bethel, where you anointed the pillar, and where you made a vow to Me; now stand up, leave this land, and return to the land of your birth.’”

When Judah saw her, he thought she was a [temple] prostitute, for she had covered her face [as such women did].