It is very needful to distinguish between perfection in the flesh and perfection as to conscience. To pretend to the former, is to exalt self; to refuse the latter, is to dishonour Christ. The babe in Christ should have a perfect conscience; whereas St. Paul had not, nor could have, perfect flesh. The flesh is not presented in the word as a thing which is to be perfected, but as a thing which has been crucified. This makes a wide difference. The Christian has sin in him, but not on him. Why? Because Christ, who had no sin in Him, ever, had sin on Him, when He was nailed to the cross.