Augustine of Hippo
Catena Aurea · Lukasevangelium 18
And a certain ruler asked him, saying, Good Master, what shall I do to inherit eternal life? And Jesus said unto him, Why callest thou me good? none is good, save one, that is, God. Thou knowest the commandments, Do not commit adultery, Do not kill, Do not steal, Do not bear false witness, Honour thy father and thy mother. And he said, All these have I kept from my youth up. Now when Jesus heard these things, he said unto him, Yet lackest thou one thing: sell all that thou hast, and distribute unto the poor, and thou shalt have treasure in heaven: and come, follow me. And when he heard this, he was very sorrowful: for he was very rich.
(Quæst. Ev. lib. ii. qu. 63.) It may seem that the account given in Matthew is different, where it is said, “Why askest thou me of good?” which might apply better to the question which he asked, What good shall I do? (Matt. 10.) In this place he both calls Him good, and asks the question about good. It will be best then to understand both to have been said, Why callest thou me good? and, Why askest thou me of good? though the latter may rather be implied in the former.