I have previously said when I was present the second time, and though now absent I say in advance to those who have sinned in the past and to all the rest as well, that if I come again I will not spare anyone, since you are seeking proof of the Christ who speaks in me, who is not weak toward you, but mighty in you. For indeed He was crucified because of weakness, yet He lives because of the power of God. For we too are weak in Him, yet we will live with Him because of the power of God directed toward you. (vv. 2-4)
There are people who speak the truth—the truth of God. This truth is logical and upholds the law. It sets us free from sin and from the death caused by sin. There is no doubt that godly people speak the truth. When saints speak the truth, its power is mighty because it is God speaking through them. That power does not come from a position, a title, a university degree, or a profession. Saints rebuke, admonish, and encourage as the Holy Spirit leads. Most importantly, saints love God and His people.
Saints understand that they are often treated as unimportant in society. We remain humble and are not interested in making ourselves appear important. Yet we speak up when the truth is threatened, because it is our life.
Many churches face various issues, one of which may be sexual immorality. Saints rebuke such things, but their words are often ignored. They are accused of being hypocritical and lawbreakers.
No one is innocent before the law. Our past, present, and future sins are forgiven through Jesus Christ. However, this does not mean that we should live according to the flesh.
Do not ignore what the Bible says.
All Scripture is inspired by God and beneficial for teaching, for rebuke, for correction, for training in righteousness (2 Timothy 3:16)