Commentary on Malachi
Novatian (200–258)
He is always therefore equal to himself; he never changes or transforms himself into other forms, lest through change he should appear to be also mortal. For the modification implied in change from one thing to another involves a share in the death of some sort. Therefore there is never any addition of parts or of glory in him, lest anything should seem to have ever been wanting to the perfect one. Nor can there be any question of diminution in him, for that would imply that some degree of mortality is in him. On the contrary, what he is, he always is; who he is, he always is; such as he is, he always is. For increase in growth indicates a beginning, whereas any wasting away evidences death and destruction. And therefore he says, "I am God and have not changed." He always retains his manner of being, because what is not born is not subject to change. For—whatever that being may be that is God—this must always be true of him, that he always is God, preserving himself by his own powers. And therefore he says, "I am who I am." That which is has this name because it always preserves its same manner of being. Change takes away the name "that which is"; for whatever changes at all is…
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