The evidence of true repentance is available for all to see in the form of actions easily identified as being changed, new, different and or a part of God. These actions are of such a nature that those people who knew you prior to this moment in time will now find that you truly have changed your heart, your ways. That your thinking is very different. That you are not the same person that you used to be prior to your sincere repentance. Your old behavior has passed away and new behavior is now in your life.
The filthier your sins are at that point in your life, the more dramatic will be the changes in your life. People may even question your sanity because your behavior changes are so dramatic. You may even experience a 180-degree turnabout in areas of your life that you have struggled with for years. In a moment of time, God can give you a complete turnabout in your sinful behavior. That is what happens when God enters the temple of your heart. Indeed, it is often the substance of astonishing miracles in your life.
“If indeed you have heard him and have been taught by him, as the truth is in Jesus: that you put off, concerning your former conduct, the old man which grows corrupt according to the deceitful lusts, and be renewed in the spirit of your mind, and that you put on the new man which was created according to God, in true righteousness and holiness.” Ephesians 4:21-23
For example, many Jews in authority doubted the Apostle Paul’s true conversion and discipleship. Even those from the original twelve disciples. However, Paul responded with different actions that spoke well of his new found belief.