18:18 And a certain ruler asked him, saying, Good Master, what shall I do to inherit eternal life?
18:19 And Jesus said unto him, Why callest thou me good? none is good, save one, that is, God.
18:20 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.
18:21 And he said, All these have I kept from my youth up.
18:22 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.
18:23 And when he heard this, he was very sorrowful: for he was very rich.
18:24 And when Jesus saw that he was very sorrowful, he said, How hardly shall they that have riches enter into the kingdom of God!
18:25 For it is easier for a camel to go through a needle's eye, than for a rich man to enter into the kingdom of God.
18:26 And they that heard it said, Who then can be saved?
18:27 And he said, The things which are impossible with men are possible with God.

(Bisqwit's comments)
Note: This is not to be interpreted as though every believer should relinquish their all possessions and give them to the poor. It is telling us to be ready to do that, if God so wishes. It is telling us to follow God's will, even if what he asks is to abandon what we love the dearest.
As long as you have something you love more than you love God, you are not committed. The thing that goes ahead of God is a false god for you.
God is not malicious. He does not ask you to leave things just for kicks. But he wants that you to keep the focus in him.

luke