John Chrysostom
He wishes to instruct us that we should exercise great caution before judging those who have sinned based solely on rumors, and we should refrain from passing judgment without sufficient evidence. It is essential for all of us to understand this: it is not only those who occupy positions of judgment who are obligated to follow this principle; every one of us must avoid denouncing our neighbor based on mere hearsay. Therefore, even the esteemed Moses, inspired by the Holy Spirit, urged us, stating, “Thou shalt not receive a vain ear." For further insight, refer to the commentary on Genesis 18:21.
Let the act of listening also be in a state of fasting; and the fasting of our hearing entails rejecting malicious talk and slander: “let not,” says the word of God, “the hearing of vanity.”