2 Old Testament scholar Victor Hamilton writes, “God’s creative activity is described twice as his work. The OT has two words for “labor.” The second word emphasizes labor that is raw and unskilled. The first—and the one used here—designates skilled labor, work that is performed by a craftsman or an artisan. Such is the measure of the finesse and professional skills of God’s work.” V. P. Hamilton, The Book of Genesis: Chapters 1–17 (Eerdmans, 1990), 142.