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, 1Sa 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, and design, so not in his hand, nor attempted by him, of the kind he was accused of, 1Sa 24:11.