Conversion is a day in, day out process, which takes a whole lifetime. It also means taking up your cross and following Jesus.
that’s my point... perfection is a long process, the Lord gave us the commandment to be perfect, but with our human condition is not possible, we can approach to perfection by our faith and works but as long as we are subject to sin in this life will not be possible.While we are always clamped to a human condition we are sinners and that disqualifies us to become perfect in this life...
1 John 1:8-10
8 If we claim to be without sin, we deceive ourselves and the truth is not in us.
9 If we confess our sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness.
10 If we claim we have not sinned, we make him out to be a liar and his word is not in us.
conclusion, God commands us to be perfect, but now we can not achieve perfection.