Gal 6:7 (NIV) Do not be deceived: God cannot be mocked. A man reaps what he sows.

The beginning aspects of salvation are designed to give a person a period of time to learn how to win against sin. His grace is protecting us so that all our sins are forgiven and righteousness is credited to our account.

If the person, during this period of time, neglects their spiritual growth, God will start allowing them to reap the consequences of their negligence. They will start being led into various satanic temptations and allowed to reap the consequences of those sins.

We cannot want to sin and want to serve God at the same time. Any who try to straddle the fence between God and the world will end up being led into temptation.