Andrew Greenwell points out that the name of God—YHWH– (Ego sum qui sum, I am who Am) “is found over 6,800 times in the Old Testament. It appears approximately 650 times in the Psalms alone. It first appears in Genesis 2:4. The only books of the Old Testament in which the unutterable name does not appear are Ecclesiastes, the Book of Esther, and Song of Songs.”