William Burkitt on Luke 18:22

Here observe, 1. Our Lord's admonition, Yet lackest thou one thing, which was true self-denial, in renouncing the sin of covetousness, and the inordinate love of worldly wealth. We ought, in the midst of our abundance, to maintain a readiness of disposition to part with all for God's sake, that is dear unto us in this world.

Observe, 2. Our Lord's injunction, Sell all that thou hast, and give to the poor. This was not a common, but a special precept, given particularly to this rich man for trial; like that given to Abraham, Gen 22:1-24 and to convince him of his corrupt confidence in riches; yet is the precept thus far of general use to all, to teach us so to contemn worldly possessions, as to be willing to part with them all at God's pleasure and when they prejudice our salvation.