1 Samuel 4:12

But a man of Benjamin ran from the battle line, etc. The people who remained from the Jews perishing because of their perfidy, hearing from the apostles: "Save yourselves from this crooked generation" (Acts 2), came to instruct those who, having been emptied of Christ, still boasted in the law and kept the tabernacle of the Lord in Shiloh without the ark of the covenant; in order to provoke the listeners more easily to repentance, tearing off every old habit, and despising all former reliance on their strength as nothing, appeared in mourning. This man is said to have well descended from Benjamin, that is, the son of the right hand, because indeed the Church, in comparison to the Synagogue, because the heavenly Jerusalem, namely our mother, compared to the present one, stands out as the right hand to the left. This man of Benjamin therefore suggests either the people of the primitive Church or some teacher of that age, the son of the right hand of faith, or certainly the apostle Paul, who also descended from the tribe of Benjamin, who, though he was the last of the apostles, labored more than all in preaching (1 Cor. 15).

14. What is represented by that man who fled from the battle line, if not that part of the Jewish people which, by coming to the knowledge of the Redeemer, abandoned Jewish faithlessness? For his running was to cease from the depravity of his error with the swiftness of devotion. Because he resolved to act bravely in professing the Redeemer, he was a man. He indeed runs from the battle on the day he was defeated, because by that illumination of faith by which he abandoned the darkness of faithlessness, he came forward to preach the truth he had come to know. Hence he is also said to have come to Shiloh, because he is sent to preach. He tore his garment, because he stripped off the old man; he sprinkled his head with dust, because he did not at all grow proud on account of the splendor of the new man with which he clothed himself. For the torn garment pertains to the beauty of holy conduct, and the sprinkling of dust to the esteem of humility. Because therefore for holy preachers neither purity of life without humility nor humility without holy conduct suffices, the man who came as a type of the teachers to announce the destruction of Israel both tore his garment and sprinkled his head with dust. For was it not with head sprinkled with this dust that he who spoke to the Lord carried himself, saying: "I will speak to my Lord, though I am dust and ashes" (Gen. 18:27)? Likewise with head sprinkled the Prophet spoke when he supplicated, saying: "Remember, O Lord, that we are dust" (Ps. 103:15). He had also torn his garment who, confessing, said: "You have torn my sackcloth and girded me with gladness" (Ps. 30:12).