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 Lord desired a special relationship with the nation of Israel choosing to bless them both spiritually and physically above all other nations. One such blessing involved bringing them safely into the land of Canaan. However, many of these blessings were dependent upon Israel maintaining the right type of relationship with the Lord. He, therefore, issued several commandments for the Israelites to carefully keep (i.e., Deuteronomy chapter 11). The Lord desired for Israel to “hearken diligently” (Deuteronomy 11:13) and “diligently keep” (Deuteronomy 11:22) these commandments. He wanted His people to carefully listen when He spoke, giving God their full attention (listening to every word). He also wanted them to attentively obey what they heard. He always desired for His people to listen to and obey Him. God speaks today through the Bible. He still wants men to diligently hear and obey.
