Cyril of Alexandria
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.
Now he thought to detect Christ in blaming the law of Moses, while He introduced His own commands. He went then to the Master, and calling Him good, says that he wishes to be taught by Him, for he sought to tempt Him. But He who takes the wise in their craftiness answers him fitly as follows, Why callest thou me good? there is none good, save God alone.