Luke 18:18-30
This event is covered in detail in the Gospels of Matthew and Mark (see below).
Luke as he does in numerous other locations discusses wealth, its responsibilities, and its dangers (cf. Luke 3:11; 5:11; 6:23-26, 34-35, 38; 7:5; 8:3, 14; 10:34-35; 11:41; 12:13-21, 33; 14:12-14, 33; 16:9-13, 19-31; 18:22; 19:8). Kingdom wealth is of great significance. It can be a blessing and/or a curse.This self-sufficient rich [young] man stands in contrast to the helpless children mentioned in Luke 18:15-17 and helpless blind man who seeks Jesus' healing in Luke 18:35-43. The children utterly trust in their parents for everything and the blind man, though blind sees clearly, while the rich man, though possessing eyes, has his vision blinded by his possessions. The rich man is like the Pharisee in Luke 18:9-14; that is he trusts in his own self-sufficiency, rather than resting as a child (as the tax-collector did) in the arms of God's amazing grace.
Luke recounted an interaction with someone questioning Jesus to teach about the dangers of wealth. It is hard for rich people to be saved because their confidence must be in God, not money.