Repentance precedes forgiveness and remission of sins past which are cleansed by the blood ( Romans 3:25)
Then we must also be born again to enter the kingdom, here we are cleansed by walking in the light of His presence (1 John 1:7)
Often the Lord uses a proxy (parable) to illustrate a principle so it can be applicable in our personal experience.
One that I have found useful is viewing the "world” as a fish bowl,... we aren’t saved in the fish bowl but are saved from it... that is to say we are saved into His kingdom. In order to do this we must "die” to the life in the fish bowl that we may live in His kingdom. If after we are born again, we go back to the world to sow and reap, (rather than abide in His kingdom), we neglect our salvation from the fish bowl.
Paul says that he was crucified with Christ, he was crucified to this world...
AND he crucified the world to himself- this is sorely lacking in most of our lives and if we are totally honest with ourselves... we are far too friendly (dependent) on the world. This will come at at great cost as we are heaping condemnation upon our heads.
7 Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap.
8 For he that soweth to his flesh shall of the flesh reap corruption; but he that soweth to the Spirit shall of the Spirit reap life everlasting