John Chrysostom — as excerpted in the Catena Aurea on Mark 10:17-27

“(ubi sup.) But the Lord said this to His disciples, who were poor and possessed nothing, in order to teach them not to blush at their poverty, and as it were to make an excuse to them, and give them a reason, why He had not allowed them to possess any thing. It goes on: And the disciples were astonished at his words; for it is plain, since they themselves were poor, that they were anxious for the salvation of others.”