The Lord detests murmuring. He hates it so much that He sent fire among the Israelites because of their murmurings (Numbers 11:1). In the New Testament, He warned believers to avoid falling prey to the same sin as the Israelites (1 Corinthians 10:1-14). Additionally, New Testament believers are admonished to do all things without murmurings (Philippians 2:14-16). People murmur as they focus on events within their lives rather than upon the Lord and His word. Yet, the Christian’s life events are ultimately brought to pass, either directly or indirectly, by a loving and caring God. The Lord abhors murmuring because it directly insults His working and provision in our lives.
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.