Our verbal communications involve the words that spring forth from our mouths. No doubt, the Lord considers these communications important and we should too. In today’s passage, the Lord gave some specific insights concerning His expectations of our communication. First, He wants our communication to be short and to the point – “let your communication be, Yea, yea; Nay, nay” (Matthew 5:37; see also Proverbs 10:19; Ecclesiastes 5:3, 7). Second, our word should be validated without the necessity of certifying it with vows, oaths, and swearing. In the context of the passage, the Lord Jesus forbade swearing “by heaven” (Matthew 5:34), “by the earth” (Matthew 5:35), or “by thy head” (Matthew 5:36). When we swear by these things, we put ourselves in danger of condemnation (James 5:12). Let your nay be nay and your yea be yea!
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.
