Though he slay me, yet will I trust in him: but I will maintain mine own ways before him.

King James Translators' Notes

maintain: Heb. prove, or, argue

Jamieson-Fausset-Brown Bible Commentary

15. in him-So the margin or keri, reads. But the textual reading or chetib is "not," which agrees best with the context, and other passages wherein he says he has no hope (Job 6:11; 7:21; 10:20; 19:10). "Though He slay me, and I dare no more hope, yet I will maintain," &c., that is, "I desire to vindicate myself before Him," as not a hypocrite [Umbreit and Noyes].

Matthew Henry's Concise Commentary

13:13-22 Job resolved to cleave to the testimony his own conscience gave of his uprightness. He depended upon God for justification and salvation, the two great things we hope for through Christ. Temporal salvation he little expected, but of his eternal salvation he was very confident; that God would not only be his Saviour to make him happy, but his salvation, in the sight and enjoyment of whom he should be happy. He knew himself not to be a hypocrite, and concluded that he should not be rejected. We should be well pleased with God as a Friend, even when he seems against us as an enemy. We must believe that all shall work for good to us, even when all seems to make against us. We must cleave to God, yea, though we cannot for the present find comfort in him. In a dying hour, we must derive from him living comforts; and this is to trust in him, though he slay us.