Theophylact of Ohrid

One must be swift to hear, not mere hearing, but active hearing that stirs one to put what is heard into practice, for it is well known that whoever listens diligently and attentively will also be ready to fulfill what is heard, while whoever, on the contrary, is slow to apply himself to something and puts it off may afterward abandon the undertaking altogether. Therefore, concerning the study of Divine matters the apostle enjoins swiftness, but concerning those things whose performance is fraught with danger, slowness. …

Commentary on James ↗

Oecumenius

Therefore, my beloved brothers, let every man be quick to hear, slow to speak, slow to anger. For the anger of man does not produce the righteousness of God. What James says is not referred to mere hearing, but to vigorous action in work and to the one who, after hearing, proceeds to perform what he has heard. …

Commentary on James ↗

Desert Fathers

Some brothers from Scetis wanted to visit Antony, and set out in a ship to go there. On board they met an old man who also wanted to go to Antony, but he did not belong to their party. During the voyage they talked about the sayings of the fathers, and the Scriptures, and then the manual work that they did, but the old man said nothing at all. When they came to the landing-place, they realized that the old man also was going to see Antony. …

The Desert Fathers, Sayings of the Early Christian Monks ↗

Bede

And slow to anger. Because the maturity of wisdom is only perceived with a tranquil mind. For it is written, anger rests in the bosom of fools (Eccles. VII). However, it does not so much alter the speed of anger, as to approve its slowness, but rather admonishes this, that even in the hour of perturbation and quarrels, let us beware lest anger creeps upon us; or if it has crept upon us, let us restrain its impulse within the confines of the mouth, and after the hour of crisis has passed, let us more freely purify it from our heart …

Commentary on the Catholic Epistles ↗