Psalms 78:72 - Joseph Benson’s Commentary on the Old and New Testaments

So he fed them Having so great a trust put into his hands, he obtained mercy of the Lord to be found both skilful and faithful in the discharge of it; he fed them That is, he ruled and taught them, guided and protected them, 1st, Very honestly; according to the integrity of his heart Aiming at nothing else but the glory of God, and the good of the people committed to his charge. The principles of religion were the maxims of his government, which he administered, not with carnal policy, but with godly sincerity, by the grace of God. 2d, Very discreetly; he did it by the skilfulness of his hands He was not only very sincere in what he designed, but very prudent in what he performed, and chose out the most proper means in pursuit of his end; for his God did instruct him to discretion. Happy the people that are under such a government! And with good reason doth the psalmist make this the finishing, crowning instance of God's favour to Israel; for David was a type of Christ, the great and good Shepherd, who was humbled first and then exalted; and of whom it was foretold, that he should be filled with the spirit of wisdom and understanding, and should judge and reprove with equity, Isaiah 11:3-4. On the integrity of his heart, and the skilfulness of his hands, all his subjects may entirely rely; and of the increase of his government and peace there shall be no end.