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 scripture contains many admonitions to seek for knowledge. Today's passage says that knowledge is something that should be added to the foundation of faith. Yet, knowledge brings with it a set of temptations. Knowledge increases sorrow (Ecclesiastes 1:18), has potential to pervert (Isaiah 47:10), and when not handled properly, “knowledge puffeth up” (1 Corinthians 8:1). With this understanding, it should come as no surprise that the Lord would instruct us to add temperance to our knowledge. Knowledge without temperance leads to many pitfalls in an individual, church, or ministry. Our knowledge must be balanced by temperance.
Athletes understand the importance of being temperate in their training. They incorporate a variety of exercises to strengthen each body part thus maximizing their potential. Limiting training to one aspect causes the athlete to lose his edge. It is important to realize that exercise is only one part of the training regimen. For instance, no serious athlete ignores the importance of a balanced diet rich in nutrients. Dedicated athletes strive for a corruptible crown by implementing temperance in all things. Believers seeking a spiritually incorruptible crown should learn from the athletes who incorporate temperance. An athlete missing out at the finish line results in sadness. The Christian's failure to incorporate balance will cause him to lose rewards at the judgment seat of Christ. This is the greater loss.