Charles H. Spurgeon on Psalms 116:18

Vows. Are well composed vows such promoters of religion? and are they to be made so warily? and do they bind so strictly? Then be sure to wait until God give you just and fit seasons for vowing. Be not over hasty to vow: it is an inconsiderate and foolish haste of Christians to make more occasions of vowing than God doth make for them. Make your vows, and spare not, so often as God bids you; but do not do it oftener. You would wonder I should dissuade you from vowing often, when you have such constant mercies; and wonder well you might, if God did expect your extraordinary bond and security for every ordinary mercy: but he requires it not; he is content with ordinary security of gratitude for ordinary mercies; when he calls for extraordinary security and acknowledgment, by giving extraordinary mercies, then give it and do it. Henry Hurst.