John Chrysostom

"Thou hypocrite, first cast out the beam out of thine own eye." Here His will is to signify the great wrath, which He hath against them that do such things. For so, wheresoever He would indicate that the sin is great, and the punishment and wrath in store for it grievous, He begins with a reproach. …

Homily on the Gospel of Matthew 23 ↗

Desert Fathers

This story was told: There were three friends, serious men, who became monks. One of them chose to make peace between men who were at odds, as it is written, 'Blessed are the peacemakers' (Matt. 5:9). The second chose to visit the sick. The third chose to go away to be quiet in solitude. Now the first, toiling among contentions, was not able to settle all quarrels and, overcome with weariness, he went to him who tended the sick, and found him also failing in spirit and unable to carry out his purpose. …

The Desert Fathers, Sayings of the Early Christian Monks ↗

Augustine of Hippo

When then we are brought under the necessity of finding fault with any, let us first consider whether the sin be such as we have never had; secondly that we are yet men, and may fall into it; then, whether it be one that we have had, and are now without, and then let our common frailty come into our mind, that pity and not hate may go before correction. Should we find ourselves in the same fault, let us not reprove, but groan with the offender, and invite him to struggle with us. …

Catena Aurea by Aquinas ↗

Thomas Aquinas

He continues: Hypocrite, first take the log out of your own eye. The Lord begins by arguing as below against the wicked servant. Augustine: "He shows that he intends to rebuke those who assume authority they do not have"; to the sinner God says: "Why do you recite my statutes or take my covenant on your lips? For you hate discipline" (Ps 50:16). First take out by fasting and prayer the log from your own eye, and then you will be able to see the speck in your brother's eye.

Commentary on Matthew ↗