...However, there is a justification Paul speaks of that we seek in Christ, once we have come and accepted Christ as our Lord and Saviour. We come as slaves to sin, but we have to be changed into slaves of righteousness, and this happens Paul tells the Romans by following the form of teaching to which they were entrusted(Rom6:16&17)
There are some sins which have to be dealt with, no one will be perfect in the flesh on this earth, but the new convert seeks to be justified in respoect of being contrlolled by sin(sin being their master) to a place where they can be slaves of righteousness
IE, a person accepts Christ into tjheir life as Lord and Saviour, they are an alcoholic. The alcoholic is not told their instant justification is at risk if the drinking does not immediately cease, but at the same time it is not possible for them to get drunk every day for the rest of their life now they have had initial justification in Christ. So there are sins that have to be dealt with if the Christian is to cross over from being a slave of sin unto a slave of righteousness, Paul speaks of this in the following
If while we seek to be justified in Christ it becomes evident that we ourselves are sinners, does this mean that Christ promotwes sin?
Absolutely not! If I rebuild what I destroyed I prove that I am a lawbreaker
Gal2:16&17
Paul is speaking of us seeking justification by faith in Christ, not striving to obey the law, in respect of laying off the sins which by their very naturee stop a person crossing over from being a slave of sin to a slave of righteousness
But this process and the ongoing sanctification is by faith in Christ, and the Holy Spirit who sanctifies us,(Rom15:16) and this is a process that continues the whole of our lives