Repent therefore, and turn again, that your sins may be blotted out, that times of refreshing may come from the presence of the Lord. Acts 3:19-20
Peter was preaching just after God had healed the lame beggar through Peter and John. He was telling them about how they healed the beggar by the power of Jesus, the one that they killed.
But he said that they acted in ignorance, so now it was time to repent of this rejection of the Author of life. By the way, when people claim that they believe in evolution, they too are rejecting the Author of life. To repent means to turn from evil and to turn to the good.
There is more to repentance than to just ask God to forgive all of your sins when you became a Christian. It is a continual turning from doing the wrong thing and replacing that habit pattern with the ones that God commands throughout the Bible. Repentance also involves confessing specific sins. David did this in Psalm 51. 1 John 1:9 tells us, “If we confess our sins, He is faithful and just to forgive our sins and to cleanse us from all unrighteousness.” You don’t have to go to a priest to confess your sins, just straight to God.
When you confess a misdeed with your mouth and actually turn from your sin with your actions, your sin is blotted out. It’s cleansed and covered by the blood of Jesus, as 1 John 1:7 declares. Not only is your sin blotted out, but then you experience a time of refreshing from the Lord. You feel better, and experience peace instead of striving and unrest, which is what sin produces. The chains that you had been bound by because of that mastering sin are broken off.
Pray and ask God to tell you what specific things you need to bring to Him. Psalm 139:23-24 instructs, “Search me, O God, and know my heart! Try me and know my thoughts! And see if there be any grievous way in me, and lead me in the way everlasting!” If you ask, He will point it out by the convicting work of the Holy Spirit. There may be specific things that you need to renounce, which involves getting rid of any trace or possibility of repeating that sin. In Acts 19 the people that were involved in magic arts and other evil practices burned their books in the sight of all. That’s renouncing.
When people are sick, or depressed, or having a “streak of bad luck,” it could be (not always, just sometimes) that there is something they need to repent of. And when they do, a season of refreshing comes from the Lord–not from a weekend getaway, a new outfit, or a different job.
Check in with God and see if there is something that needs cleared up. It will be worth it.