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).
The opening words of our passage express a desperate warning that is increasingly neglected today. The Devil has convinced many Christians that the content of their daily conversations has no bearing on their spiritual walk. The Bible, however, speaks to the contrary. In fact, the Lord sounded the warning “be not deceived.” Why? Because quite simply: evil communications corrupt good manners! Christians who desire to serve the Lord and please Him easily can be derailed by choosing to surround themselves with those using evil communications. It is very important to speak righteous things and surround ourselves with those who carry themselves in a Christlike manner.
The Lord Jesus had been brutally killed on the cross; however, many of His disciples remained unaware of His subsequent resurrection. Luke chapter 24 picks up the narrative as two of His followers walked along talking about the events of His crucifixion. Though not immediately recognized, the Lord showed up in the midst of their communications. The Lord asked them, “What manner of communications are these that ye have one to another, as ye walk, and are sad?” When they told Him of the content of their communications, the Lord rebuked them for their lack of faith in the prophecies of old (Luke 24:25). The two disciples on the road to Emmaus did not expect the Lord Jesus to show up in the midst of their communication, but He did! Would your communication be any different if you believed Christ could “show up” in the midst of your discussion?
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!
