This saying of the brother of the Lord has the following meaning. I have given you, Christians, many and various examples to persuade you to cease from anger and bitter words against your brethren.
I have done this so that you may love and begin to practice meekness and soul-profiting conversations.
If anyone among you confesses that he has understood my foregoing discourse, has wisdom from above and divine understanding, and has profited from it by changing for the better, let him furnish his confession with good works.
Let him show the fruit of the benefit he received from my words by living a Christian life in meekness and longsuffering. Let him not boast in lofty and empty words that he has profited from my teaching.
For if such a man has bitter envy in his heart, according to Theophylact, this is a movement of a zealous and troubled soul. Likewise, if he produces rivalry, that is, vain disputes and accusation, let him not boast that he profited from my words.
Such a man is a liar and does not speak the truth. Therefore, if someone does not show virtuous works, longsuffering, and meekness toward his brethren, but speaks only plausible and rhetorical words in order to appear blameless, he is plainly convicted.
He does not have in his soul the indwelling of divine wisdom from above, of which the author of Proverbs said: "The Lord gives wisdom, and from His face come knowledge and understanding" (Prov 2:6).
The same one says in Wisdom: "Wisdom will not enter a soul that devises evil, nor dwell in a body subject to sin" (Wis 1:4).
For this reason the brother of the Lord says in order that this is not the wisdom from above, descending from God, of which I have already said to you: "If any of you lacks wisdom, let him ask of God, Who gives to all without partiality and without reproach."
Rather, this is earthly wisdom, psychic wisdom, that is, fleshly wisdom, and demonic wisdom. He rightly called this wisdom by evil names, in order to separate it from the wisdom given from above by the Father of lights.
That wisdom does not have the fruits and signs of true and divine wisdom. It is falsely named, fleshly, and foolish before God, being composed of plausible words.
Concerning it blessed Paul wrote: "Not in fleshly wisdom, but by the grace of God, we conducted ourselves in the world" (2 Cor 1:12). Again: "My speech and my preaching were not in persuasive words of human wisdom" (1 Cor 2:4).
And elsewhere: "The wisdom of this world is foolishness with God" (1 Cor 3:19).
The holy brother of God truly constructs and shows this whole meaning by consecutive phrases, saying that envy and disputes are disorder and every evil thing. Disorder and evil are the result of earthly, fleshly, and demonic wisdom, not of divine wisdom from above.
Since there are rivalries and disputes among you, you are possessors of earthly, fleshly, and demonic wisdom, not of divine wisdom from above.
Paul wrote almost the same thing to the Corinthians: "For you are still carnal. For where there are envy, rivalries, and divisions among you, are you not carnal and walking according to man?" (1 Cor 3:3).
Theophylact and Oecumenius say that certain Christians of that time loved to rule and were proud of worldly wisdom. Out of envy toward virtuous and true teachers, they preached to others.
Therefore they mixed much that was human with what was divine, so that by novel words they might draw their listeners to their own opinion. From this came heresies.
Therefore the divine James, having finished his teaching about the unbridled tongue and evil speech, here teaches against envy and vain disputes. He says that this teaching, which comes from envy, is not from divine wisdom, but from demonic wisdom.
Since the word "zeal" or "envy" has a neutral meaning, as it signifies both good zeal and evil zeal, he calls it bitter in order to distinguish it from good zeal. Zeal is a fiery movement of the soul toward something. Rivalry is vicious contentiousness.