(9) Hast slain him.--This is a different and stronger word than "killed" in the first part of the verse, and might well be translated murdered. It was murder in the eyes of the Lord, although accomplished indirectly by the sword of the Ammonites.

12:1-14 God will not suffer his people to lie still in sin. By this parable Nathan drew from David a sentence against himself. Great need there is of prudence in giving reproofs. In his application, he was faithful. He says in plain terms, Thou art the man. God shows how much he hates sin, even in his own people; and wherever he finds it, he will not let it go unpunished. David says not a word to excuse himself or make light of his sin, but freely owns it. When David said, I have sinned, and Nathan perceived that he was a true penitent, he assured him his sin was forgiven. Thou shalt not die: that is, not die eternally, nor be for ever put away from God, as thou wouldest have been, if thou hadst not put away the sin. Though thou shalt all thy days be chastened of the Lord, yet thou shalt not be condemned with the world. There is this great evil in the sins of those who profess religion and relation to God, that they furnish the enemies of God and religion with matter for reproach and blasphemy. And it appears from David's case, that even where pardon is obtained, the Lord will visit the transgression of his people with the rod, and their iniquity with stripes. For one momentary gratification of a vile lust, David had to endure many days and years of extreme distress.Wherefore hast thou despised the commandment of the Lord, to do evil in his sight?.... The commandment referred to is the law of God, particularly the sixth and seventh precepts of it, Exodus 20:13; which David had shown no regard unto, and by his breaking them had slighted and despised them:

thou hast killed Uriah the Hittite with the sword; and so had despised and broken the sixth command, Exodus 20:13; for though he had not taken away his life with his own hand, he had plotted and contrived it, and had given orders to put him in such a position as would issue in it:

and hast taken his wife to be thy wife; after he had defiled her, being another man's wife, and had taken such unlawful methods to make her his wife, whereby he had despised and broken both the sixth and the seventh commands, Exodus 20:13,

and hast slain him with the sword of the children of Ammon; though he had not put him to death with his own sword, he had done that which was as bad or worse in some respects, he had exposed him to the sword of the Ammonites, by which it was taken away; and not his only, but that of some of the Israelites also, which gave that uncircumcised people reason to triumph over the children of Israel, and even to blaspheme the God of Israel.