David said - I have sinned greatly - We know not exactly in what this sin consisted. I have already hinted, Sa2 24:1, that probably David now began to covet an extension of empire, and purposed to unite some of the neighboring states with his own; and having, through the suggestions of Satan or some other adversary, (for so the word implies), given way to this covetous disposition, he could not well look to God for help, and therefore wished to know whether the thousands of Israel and Judah might be deemed equal to the conquests which he meditated. When God is offended and refuses assistance, vain is the help of man.

And David's heart smote him, after that had numbered the people,.... For nine or ten months his conscience lay asleep, but now the thing was done, it is awakened, and accuses him for it, and he repents of it; now he began to see the pride and haughtiness of his heart; his vanity and confidence in the creature, which led him to it; aggravated by doing it without seeking to know the mind of God, and without giving him his due, the half shekel, according to the law, Exo 30:12; intent only upon increasing his own revenue, as some think, intending to impose a poll tax upon the people when he had numbered them; and attempting to number a people who were not to be numbered; and numbering those who were under the age of twenty, and therefore the plague began before it was finished, Ch1 27:23,

and David said unto the Lord, I have sinned greatly in that I have done; he saw and owned his sin to be exceeding sinful, attended with very aggravating circumstances:

and now I beseech thee, Lord, take away the iniquity of thy servant; the guilt of it from his conscience, which lay heavy there, and suffer not the punishment it deserves to take place on him, but grant an application of pardon to him:

for I have done very foolishly; all sin is folly, and some sins are exceeding foolish, and so this appeared to David; or, "though I have done very foolishly" (b), yet forgive my sin, see Psa 38:5.

(b) "quamvis", so Goassius notes it may be rendered; so Pool.

HE, HAVING THREE PLAGUES PROPOUNDED BY GAD, REPENTS, AND CHOOSES THREE DAYS' PESTILENCE. (Sa2 24:10-14)

David's heart smote him after that he had numbered the people. And David said unto the Lord, I have sinned--The act of numbering the people was not in itself sinful; for Moses did it by the express authority of God. But David acted not only independently of such order or sanction, but from motives unworthy of the delegated king of Israel; from pride and vainglory; from self-confidence and distrust of God; and, above all, from ambitious designs of conquest, in furtherance of which he was determined to force the people into military service, and to ascertain whether he could muster an army sufficient for the magnitude of the enterprises he contemplated. It was a breach of the constitution, an infringement of the liberties of the people, and opposed to that divine policy which required that Israel should continue a separate people. His eyes were not opened to the heinousness of his sin till God had spoken unto him by His commissioned prophet.