Today's passage teaches several remarkable truths concerning joy. First, joy is given to man by God--but not indiscriminately given to every man. Apparently, joy is given to those who are not sinners in the sense of wallowing in it. Everyone sins, but this verse speaks to the fact that God does not openly bless the sinner who has no desire for God to help him overcome his sinful ways. Moreover, our passage further reveals that God considers it good in His sight for a man to have joy. This point may seem insignificant, but it emphasizes God's true desire for man. Just as God desires for men to have wisdom and knowledge, He wants men to know the joy that comes only from and through Him. Some may think the source of joy disputable, but James 1:17 affirms that “every good gift and every perfect gift is from above.”
Scripturally speaking, a vow involves a solemn promise made to another individual or to God Himself. In our passage, vow is used both as a verb and a noun. Vowing a vow is analogous to someone promising a promise. Men are to keep their word by keeping their promises; or, in other words, men are to be faithfully dependable. When a man makes a promise to God or to another person, he should do everything within his power to keep that promise. The Bible warns against a man allowing his mouth to cause his flesh to sin by making promises with no intention of keeping them. Those who vow a vow to the Lord and fail to perform it are called “fools” and the Lord “hath no pleasure in fools.” Before making any promise, one should first count the cost to determine whether or not making the vow will simply cause him to sin.
