John Calvin on James 4:10

10 Humble yourselves, or, be ye humbled. The conclusion of what is gone before is, that the grace of God then be ready to raise us up when he sees that our proud spirits are laid aside. We emulate and envy, because we desire to be eminent. This is a way wholly unreasonable, for it is God’s peculiar work to raise up the lowly, and especially those who willingly humble themselves. Whosoever, then, seeks a firm elevation, let him be cast down under a sense of his own infirmity, and think humbly of himself. Augustine well observes somewhere, As a tree must strike deep roots downwards, that it may grow upwards, so every one who has not his soul fixed deep in humility, exalts himself to his own ruin.

James 4:11-12

11 Speak not evil one of another, brethren. He that speaketh evil of his brother, and judgeth his brother, speaketh evil of the law, and judgeth the law: but if thou judge the law, thou art not a doer of the law, but a judge.

11 Ne detrahatis invicem, fratres; qui detrahit fratri, aut judicat fratrem suum, detrahit legi, et judicat legem; si autem judicas legem, non es factor legis sed judex.

12 There is one lawgiver, who is able to save and to destroy: who art thou that judgest another?

12 Unus est legislator, qui potest servare et perdere: tu, quis es qui judicas alterum?