John 16

8 And when He has come, He will convict the world of sin, and of righteousness, and of judgment: 9 of sin, because they do not believe in Me; 10 of righteousness, because I go to My Father and you see Me no more; 11 of judgment, because the ruler of this world is judged.

Believing in Christ deals with sin. His righteousness is manifest in us by His Spirit. He applies through us the judgement that has been passed on the enemy...Acts 10.38
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