If Christ is in a person, then they have already been judged and found not guilty by God, because Jesus was judged, took all of our sin, and paid the penalty completely.
It is finished. The blood is enough. It covers all of our sin - past, present, and future.
Stop trying to earn what you cannot possibly pay for.
Yes, IF Christ is in a person. That is the big IF is it not? If one claims to be "in Christ" but is still living "in sin" then something is amiss because Christ is not a sinner. IF a person is "in Christ" then they should walk as He walked= in righteousness. It's not about earning salvation, but about abiding in Christ by abiding in righteousness, because Christ who now dwells in us is our righteousness. The proof of a true conversion is in the WAY we walk.
Those who abide in sin do not abide in Christ.