Shall make him ruler - Shall confirm his appointment over his household, and, as a reward, shall place him over all his property.
This does not mean that ministers will have a higher rank or office, but is a circumstance of "the parable" or story, designed to show the effect of faithfulness. Faithful servants of Christ shall be rewarded. This will be done by His approbation, and by the rewards of the heavenly world.

He shall make him ruler over all his goods - O heavenly privilege of a faithful minister of Christ! He shall receive from God a power to dispense all the blessings of the new covenant; and his word shall ever be accompanied with the demonstration of the Holy Ghost to the hearts of all that hear it. Much of a preacher's usefulness may be lost by his unfaithfulness.

Verily I say unto you,.... Nothing is a greater truth, more certain, or to be depended on, than this; all such wise, faithful, diligent, and industrious servants may expect it:
that he, shall make him ruler over all his goods; will honour him with greater gifts, bestow a larger degree of Gospel light and knowledge on him, make him more useful in the church below, and at last cause him to inherit all things in the other world, all glory, happiness, and bliss.