Many come to Jesus, attracted to His person, but unwilling to admit their own spiritual bankruptcy. So it was for the RYR (“Rich Young Ruler”). He thought to add Jesus to his portfolio of good works. Yet, Jesus saw his heart. Jesus challenged him to die to his former life and leave everything behind to follow Him. This filled the RYR with sorrow, for he had great worldly wealth. It also revealed his failure to keep even the first of the ten commandments, putting his love of money ahead of his love of God.
The invitation to follow Christ is not a call to religious effort (i.e. “What shall I do?”), but a call to come and die, that you might be born again in newness of life in Christ Jesus (Rom.6:4, 11).