[4:1] 1 tc Most
[4:1] 2 sn Has finished with sin. The last sentence in v. 1 may refer to Christ as the one who suffered in the flesh (cf. 2:21, 23; 3:18; 4:1a) and the latter part would then mean, “he has finished dealing with sin.” But it is more likely that it refers to the Christian who suffers unjustly (cf. 2:19-20; 3:14, 17). This shows that he has made a break with sin as vs. 2 describes.
[4:2] 3 tn This verse may give the purpose or result of their “arming” themselves as called for in v. 1b and then the translation would be: “so that you may spend the rest of your time…” But it is better to take it as explanatory of the last phrase in v. 1: what it means to be finished with sin.