Theophylact of Ohrid
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.
The law first forbids those things to which we are most prone, as adultery for instance, the incitement to which is within us, and of our nature; and murder, because rage is a great and savage monster. But theft and bearing false witness are sins which men seldom fall into. And besides, the former also are the more grievous sins, therefore He places theft and bearing false witness in the second place, as both less common, and of less weight than the other.