Rejoicing refers to moderation of spirit when the mind keeps itself in calmness under adversity and does not give indulgence to grief. Constant praying is the way of 'rejoicing perpetually', for by this means we ask from God alleviation in connection with all our distresses.
John CalvinThe subject then of these chapters may be stated thus, - man's only righteousness is through the mercy of God in Christ, which being offered by the Gospel is apprehended by faith.
John CalvinWere the judgments of mankind correct, custom would be regulated by the good. But it is often far otherwise in point of fact; for, whatever the many are seen to do, forthwith obtains the force of custom. But human affairs have scarcely ever been so happily constituted as that the better course pleased the greater number. Hence the private vices of the multitude have generally resulted in public error, or rather that common consent in vice which these worthy men would have to be law.
John CalvinCreatures are so governed by the secret counsel of God, that nothing happens but what he has knowingly and willingly decreed.
John Calvin