5:1-6 Public troubles are most grievous to those who live in pleasure, and are secure and sensual, though all ranks suffer deeply at such times. All idolized treasures will soon perish, except as they will rise up in judgment against their possessors. Take heed of defrauding and oppressing; and avoid the very appearance of it. God does not forbid us to use lawful pleasures; but to live in pleasure, especially sinful pleasure, is a provoking sin. Is it no harm for people to unfit themselves for minding the concerns of their souls, by indulging bodily appetites? The just may be condemned and killed; but when such suffer by oppressors, this is marked by God. Above all their other crimes, the Jews had condemned and crucified that Just One who had come among them, even Jesus Christ the righteous.

2. corrupted—about to be destroyed through God's curse on your oppression, whereby your riches are accumulated (Jas 5:4). Calvin thinks the sense is, Your riches perish without being of any use either to others or even to yourselves, for instance, your garments which are moth-eaten in your chests.

garments … moth-eaten—referring to Mt 6:19, 20.