▼tn Job has held to his innocence, so the only way that he could say “I have erred” (שָׁגִיתִי, shagiti) is in a hypothetical clause like this.

▼tn There is a long addition in the LXX: “in having spoken words which it is not right to speak, and my words err, and are unreasonable.”

▼tn The word מְשׁוּגָה (meshugah) is a hapax legomenon. It is derived from שׁוּג (shug, “to wander; to err”) with root paralleling שָׁגַג (shagag) and שָׁגָה (shagah). What Job is saying is that even if it were true that he had erred, it did not injure them—it was solely his concern.