Psalms 7:3

“O Lord my God, if I have done this.] The crime which Saul and his courtiers charged him with, and which was made so public that every body knew it; and therefore it was needless particularly to mention it; namely, that he lay in wait for Saul, and sought his life to take it away, (<092409>1 Samuel 24:9). The Targum interprets it of this psalm, paraphrasing it, “if I have made this song with an evil intention”; to give an ill character of any, and lead them with false charges; if there be iniquity in my hands; not that he was without sin, he had it in his heart; nor that he lived without the actual commission of sin: but his sense is, that there was no iniquity, as not in his heart, purpose,…”

“if I have done this--that is, the crime charged in the "words of Cush" (compare Sa1 24:9).”

“O Lord my God - A solemn appeal to God as to the sincerity and truth of what he was about to say. If I have done this - This thing charged upon me, for it is evident that “Cush,” whoever he was, had accused him of some wrong thing - some wicked action. What that was can only be learned from what follows, and even this is not very specific. So far as appears, however, it would seem to be that he accused David of bringing evil, in some way, upon one who was at peace with him; that is, of wantonly and without provocation doing him wrong, and of so doing wrong that he had the avails of it in his own possession - some spoil, or plunder, or property, that he had taken from him. The charge would…”

“Hands - Which Cush and others falsely lay to my charge. Iniquity - In my actions. Psalms 7:4”

“7:3-5 The psalmist swears to his innocence, making himself vulnerable to scrutiny (7:9. 7:3 The psalmist does not claim to be without sin, but he knows that he does not deserve the brutal attacks of his opponents (see 35:7).”

“if I: Psa 59:3; Jos 22:22; Sa1 20:8, Sa1 22:8, Sa1 22:13, Sa1 24:9, Sa1 26:18, Sa1 26:19; Sa2 16:7, Sa2 16:8; Job 16:17-19 if there: Psa 66:18; Sa1 24:11; Job 11:14 Psalms 7:4”

“(Heb.: 7:4-6) According to the inscription זאת points to the substance of those slanderous sayings of the Benjamite. With בּכפּי אם־ישׁ־עול one may compare David's words to Saul אין בּידי רעה Sa1 24:12; Sa1 26:18; and from this comparison one will at once see in a small compass the difference between poetical and prose expression. שׁלמי (Targ. לבעל שׁלמי) is the name he gives (with reference to Saul) to him who stands on a peaceful, friendly footing with him, cf. the adject. שׁלום, Psa 55:21, and אישׁ שׁלום, Psa 41:10. The verb גּמל, cogn. גּמר, signifies originally to finish, complete, (root גם, כם ,גם t, cf. כּימה to be or to make full, to gather into a heap). One says טּוב גּמל and גּמל…”