5:6 Ye have condemned [and] killed the just. The murder of the Just One, Jesus, was the crowning sin of Israel which brought upon them destruction. It was the rich and influential, not the poor, who sought his death.
[And] he doth not resist you. Compare Isa 53:7.
5:6 Ye have killed the just - Many just men; in particular, that Just One, Acts 3:14. They afterwards killed James, surnamed the Just, the writer of this epistle. He doth not resist you - And therefore you are secure. But the Lord cometh quickly, Jas 5:8.
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.