If I have made gold my hope, or have said to the fine gold, Thou art my confidence; Gold my hope - For the meaning of זהב zahab, polished gold, and כתם kethem, stamped gold, see on Job 28:15-17 (note).
Related Commentaries of Job 31:24
Job 31:24
24 If I have made gold my hope, or have said to the fine gold, Thou art my confidence;