A basic definition of communication involves making things common. When we speak to others, we express what is in our minds and hearts making those thoughts common with others. The Bible warns the believer in Ephesians 4:29 to “Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers.” The words that come out of our mouths should edify or build up others, not demean and degrade them. They should be strengthened by what we say. Keep in mind that corrupt communications weaken the believer (1 Corinthians 15:33). This is why Christians are instructed to put off all “filthy communication” (Colossians 3:8).
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!
The Bible associates love with action. In this passage, the Bible speaks of the believer’s love for other believers, relating it to the Lord’s crucifixion. If a Christian knows and recognizes the love of God, it should drastically affect his relationships. He cannot deal with others as the world would because the love of God has formed compassion within in his heart. This matter is so important to the Lord that He provided believers with a scenario to help judge their level of compassion. The book of First John says that if a brother has a need, and another brother can help him with his need, yet refuses, he lacks compassion (see also James 2:15-16). Therefore, one’s deeds, not simply one’s words alone, demonstrate true love!
