John Chrysostom

Wherefore then doth Christ thus reply to him, saying, "There is none good?" Because He came unto Him as a mere man, and one of the common sort, and a Jewish teacher; for this cause then as a man He discourses with him. And indeed in many instances He replies to the secret thoughts of them that come unto Him; as when He saith, "We worship we know what;" and, "If I bear witness of myself, my witness is not true." When therefore He saith, "There is none good;" not as putting Himself out from being good doth He say this, far from it; for …

Homily on the Gospel of Matthew 63 ↗

Theophylact of Ohrid

But if thou wilt enter into life, keep the commandments. He saith unto Him, Which? Jesus said, Thou shalt do no murder, Thou shalt not commit adultery, Thou shalt not steal, Thou shalt not bear false witness, Honour thy father and thy mother, and, Thou shalt love thy neighbour as thyself. The Lord directs the enquirer to the commandments of the law, so that the Jews could not say that He despised the law.

Commentary on Matthew ↗

Augustine of Hippo

This may seem a discrepancy, that Matthew here gives it, Why askest thou me concerning good? whereas Mark and Luke have, Why callest thou me good? For this, Why askest thou me concerning good? may seem rather to be referred to his question, What good thing shall I do? for in that he both mentioned good, and asked a question. But this, Good Master, is not yet a question. Either sentence may be understood thus very appropriately to the passage. (de Trin. i. …

Catena Aurea by Aquinas ↗

Jerome

Why do you ask me about what is good? There is only one good God. Because he had called a good teacher, and not God, or the Son of God, he learns that even a holy man is not good in comparison to God, of whom it is said: Give thanks to the Lord, for he is good (Psalm 117:1). But lest anyone think that the goodness of God excludes the Son of God, we read in another place: The good shepherd lays down his life for his sheep (John 10). And in the Prophet, the good Spirit and the good earth. …

Commentary on Matthew ↗

Thomas Aquinas

Who said to him: why do you ask me? Here he presents the response. First he responds, as is found in Mark, why do you call me good? But here, why do you ask me? Both can be understood. But what Matthew says, why do you ask me? has no difficulty; but according to what Mark says, the Arians adopted the error, saying that the Father is good by essence, the Son by participation; therefore they held the Son to be unequal to the Father. But it should be noted that he says: one is good, God. …

Commentary on Matthew ↗