Fear introduced is faith attacked. As such, we should not be partakers of the world’s fears. Instead, we should “sanctify the LORD of hosts himself; and let him be” our fear (Isaiah 8:13). Throughout scripture, the Lord admonished His people not to fear the world. Why? The answer is twofold: (1) the Lord was with them (Genesis 26:24) and (2) fear of the world yields bondage (Proverbs 29:25). This worldly bondage never originates with the Lord (Romans 8:15) for He has given Christians a sound mind (2 Timothy 1:7). We need not fear those who can destroy the body (Matthew 10:28); rather, we ought to say the Lord is our helper, and we will not fear what men will do unto us (Hebrews 13:6).
God is as equally concerned with what we do as to how we do it. It is not only important that we have the right kind of conversation, but that our conversation be based on “simplicity and godly sincerity.” In other words, our conversation should be genuine and never extravagant. People behave for different reasons. Sometimes those reasons are godly, yet at other times they reflect ungodliness. Anyone can feign a good conversation for a short period; however, only with the Lord's help can one's motives consistently match his actions. Paul not only sought to have his conversation right before the Lord, but also desired a genuine change of heart to bring forth the proper conversation.