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In the first volume of his impressive work The Whole Counsel of God, CT Richard Gamble identifies four covenant types in Scripture. I have no qualm with the first three, but Gamble’s fourth variety of covenant is “one among the three persons of the Godhead.” (I.284). He sees a “hint” of this in the words “Let us make man in our image” in Genesis 1:26, but points to a “clearer example” in Genesis 8:21-22. In this instance “God was not speaking to Noah, but was in fact making a covenant with himself.” (I.285).