Then Jesus spoke a parable to them, saying: “The ground of a certain rich man yielded plentifully. And he thought within himself, saying, ‘What shall I do, since I have no room to store my crops?’ So he said, ‘I will do this: I will pull down my barns and build greater, and there I will store all my crops and my goods. ’And I will say to my soul, “Soul, you have many goods laid up for many years; take your ease; eat, drink, and be merry.” But God said to him, ‘Fool! This night your soul will be required of you; then whose will those things be which you have provided?’ So is he who lays up treasure for himself, and is not rich toward God.” (Luke 12:16-21)
St. Gregory Palamas points out the rich man did not obtain his wealth through sinful means. His sin was his self-centered, self-satisfaction which resulted in his heart being hardened against the needy.
“As for the greedy man who did not give to those in need when his land brought forth plentifully, but extended his barns, the Lord says to him in the Gospels, “Thou fool, this night thy soul shall be required of thee: then whose shall those things be, which thou hast provided?” (Luke 12:16-20). Then, lest anyone should suppose that this verdict applied to one particular individual, He adds, “So is he that layeth up treasure for himself, and is not rich towards God” (Luke 12:21). Yet that rich man did not grow wealthy by unjust means. What wrong did he commit if his land yielded him a good harvest?
However, because he did not make good use of the abundance he received from God, and was not rich towards him through being generous, he made himself deserving of death, and gained nothing from all his wealth.” (The Homilies, p. 308)