Psalms 63:11

But the king shall rejoice in God; every one that sweareth by him shall glory: but the mouth of them that speak lies shall be stopped.

Ver. 11. But the king shall rejoice in God] i.e. I shall, who am anointed and appointed king after Saul, and therefore doubt not to speak thus of myself, as if I were king already. Wicked men praesumendo sperant, et sperando pereunt, hope groundlessly, and perish by their presumption; but true believers trust God upon his bare word, and that against sense in things invisible, and against reason in things incredible, and according to their faith so is it unto them.

Every one that sweareth by him shall glory] By whom? not by the king (though the Egyptians did so of old, and the Spaniards to this day, in the pride of their monarchs, swear by the life of their king), but by God, the sole and proper object of an oath; for to swear by his name in due manner is a special piece of his service, and is here put for the whole. So, then, every one that sincerely serveth God shall be glad and thankful to God that David reigneth; for now παντα καλως εσται (as the raven is said to have crouped from the Capitol when Augustus came to the empire), all shall go well with them, according to their own heart's desires (Dio).

But the mouth of them that speak lies] A fault whereof Saul's courtiers were deeply guilty. Some take this for a general description of all graceless and godless persons, who are liars habitually at least; as godly men are right swearers, and fearers of God's name.

Shall be stopped] Either with shame and confusion, or with death, as was Saul's and his flatters'. Saunders's foul mouth was stopped with famine (as hath been above noted), that had uttered so many blasphemies against God, and so many lies against men.