[9:12] 1 tn E. Dhorme (Job, 133) surveys the usages and concludes that the verb חָתַף (khataf) normally describes the wicked actions of a man, especially by treachery or trickery against another. But a verb חָתַף (khataf) is found nowhere else; a noun “robber” is found in Prov 23:28. Dhorme sees no reason to emend the text, because he concludes that the two verbs are synonymous. Job is saying that if God acts like a plunderer, there is no one who can challenge what he does.
[9:12] 2 tn The verb is the Hiphil imperfect (potential again) from שׁוּב (shuv). In this stem it can mean “turn back, refute, repel” (BDB 999 s.v. Hiph.5).
[23:13] 3 tc The MT has “But he [is] in one.” Many add the word “mind” to capture the point that God is resolute and unchanging. Some commentators find this too difficult, and so change the text from בְאֶחָד (bÿ’ekhad, here “unchangeable”) to בָחָר (bakhar, “he has chosen”). The wording in the text is idiomatic and should be retained. R. Gordis (Job, 262) translates it “he is one, i.e., unchangeable, fixed, determined.” The preposition בּ (bet) is a bet essentiae – “and he [is] as one,” or “he is one” (see GKC 379 §119.i).
