John Calvin on 1 Peter 2:20

It is not, however, an assertion without its difficulty, when he says, that there is nothing praiseworthy in him who is justly punished; for, when the Lord punishes our sins, patience is certainly a sacrifice of sweet odour to him, that is, when we bear with a submissive mind our punishment. But to this I reply, that Peter does not here speak simply but comparatively; for it is a small and slender praise to bear with submission a just punishment, in comparison with that of an innocent man, who willingly bears the wrongs of men, only because he fears God. At the same time he seems indirectly to refer to the motive; because they who suffer punishment for their faults, are influenced by the fear of men. But the reply already given is sufficient.

1 Peter 2:21-23

21. For even hereunto were ye called: because Christ also suffered for us, leaving us an example, that ye should follow his steps:

21. In hoc enim vocati estis; quoniam Christus quoque passus est pro vobis, relinquens vobis exemplum, ut sequeremini vestigia ejus:

22. Who did no sin, neither was guile found in his mouth:

22. Qui quum peccatum non fecisset, nec inventus esset dolus in ore ejus;

23. Who, when he was reviled, reviled not again; when he suffered, he threatened not; but committed himself to him that judgeth righteously:

23. Quum probro afficeretur, non regerebat; quum pateretur, non comminabatur; causam vero commendabat ei qui juste judicat.