Ecclesiastes 5:4

4. When thou vowest Vows are promises voluntarily made, not specifically required. They are positive when one promises to do or give something for a religious purpose; they are negative when one promises to abstain from any indulgence or gratification. The vow of the first kind is here spoken of. Under the warming influence of worship at the house of God one might make a vow from which, on cool and private reflection, he would recoil.

For he hath no pleasure in fools Better, There is no solid purpose in fools; and the man who wavers in the payment of a vow classifies himself with them.