The acts of the sinful nature are obvious: sexual immorality, impurity and debauchery; idolatry and witchcraft; hatred, discord, jealousy, fits of rage, selfish ambition, dissensions, factions and envy; drunkenness, orgies, and the like. I warn you, as I did before, that those who live like this will not inherit the kingdom of God. (Galatians 5:19-21—NIV)
In these verses Paul warns the believer that if they live as the world does they will not inherit the kingdom of God. This is a sober warning. The new covenant provides for the change needed within the believer to reject the above list given in Galatians 5 and to choose goodness and righteousness. The problem with the old covenant was that it could not change the sinful nature of the believer as the new covenant now provides. The old covenant was based on a set of rules, but the new covenant changes the desires and the nature of the believer, so that they keep the commandments of God naturally.
It is clear in the Bible that God judges sin. The world of Noah was destroyed because of sin. ‘They think evil in their hearts continually’, God says. In the new testament Annanias and Saphira were judged by Peter because they lied to the Holy Spirit. God hates sin the Bible says. Our sin separates us from God.
We understand that God is gracious and merciful, and he provides for our errors as we walk with him. However, he does not do this unless we are working hard to defeat the sin in our lives. He will give us the victory if we look to him and use the tools he has provided to help us. Sin is never OK with God. We see this over and over in the Bible. With Saul trying to kill David, with the Pharisees trying to kill Jesus, with the man who sinned in the church of Corinth.
The church teaching today apparently says that sin is OK because it is covered and forgiven by God. When we read the Bible we can see that this teaching is not scriptural. This teaching takes a part of the truth of the Word and tries to make it the whole Truth for reasons of patronizing the believers who are failing and to gain followers in their churches.