I see it differently. The rich man was an Israelite and he had kept the Law. The Law promised wealth if kept. Notice the wording. God's name is at stake.
"But thou shalt remember the LORD thy God: for it is he that giveth thee power to get wealth, that he may establish his covenant which he sware unto thy fathers, as it is this day" (Deuteronomy 8:18)
Covetousness is always present, but this was not the issue. The issue was whether the rich man could go the New Way. That is, could he set aside this world NOW in order to gain it when Christ set up His Kingdom. According to the prophets, especially Daniel, the Gentiles would have their time to rule, but that at a certain time Christ would wrest it away from them, crush their political, economical and military might. This is the subject at hand. Because Christ was being rejected by Israel, He would have to gather a New People to be rulers of the earth (Matt. 21:43; Act.15:14-16). And the TRAINING needed for these people to be free of the present world system, was the preparedness to forsake it wealth. The co-kings of Christ in the next age must be men and women who have learned to receive their supply from God and not the world.
The rich young man had no apparent fault. He had kept the Law and received its temporal reward. But the righteousness achieved by Law was inadequate for the Kingdom that Christ would set up. To receive an inheritance in this Kingdom, a man must be:
- born again for this Kingdom (Jn.3:3)
- Baptized for this Kingdom (Jn.3:5)
- lose your "soul" - life (Matt.16:25)
- deny your flesh daily (Matt.16:24)
- have a righteousness exceeding that of the Pharisees (Matt:5:20)
- be innocent of the sins mentioned in in Galatians 5:21 and Ephesians 5:5
- undergo a transforming work of character (2nd Pet.1:5-11)
- be resurrected with a body of celestial glory, or changed in body (1st Cor.15:35, 40, 50-53)
The rich man had recognized Who Jesus was. In Matthew 19:17 he called Him "good" in the knowledge that only God was good. But he was asked to take the same road as his "Master" and King - the road of foresaking the present age all for a future Kingdom. This he was not capable off. And nor are many Christians. The last Church of Revelation Chapters 2 and 3, Loadicea, was wealthy but void of Christ. Their wealth had made them shut a door against Christ. This is how the returning Christ will find His Church - fully immersed in the worlds wealth (Rev.18:4). Frightening!