Luke 16:11

This verse now opposeth the unrighteous mammon to the true riches, which would strongly incline one to think, that by the mammon of unrighteousness, before mentioned, our Saviour meant only false and deceitful riches. By the true riches I cannot think is meant the gospel, which indeed is said to be committed to trust of the ministers, but not of all Christians. I had rather interpret it of special, effectual grace, which is of all other the true riches: and so it teacheth us this great truth, That God is justified in the denial of his special grace to those who do not make a due use of his common gifts and grace; and indeed here will lie men's damnation, because they do not make a just use of that common grace which they have, and might make a better use of it than they do. If they would be faithful in that, God would not deny them the true riches.