'Vowed' in the Bible

This is in addition to the [weekly] Sabbaths of the Lord, and in addition to your gifts and all your vowed offerings and all your freewill offerings, which you give to the Lord.

But if the person is too poor to pay your valuation, then he shall be placed before the priest, and the priest shall value him; according to the ability of the one who vowed, the priest shall value him.