Nicholas Martin

“The attributes are real determinations of the Divine Being or, in other words, qualities that inhere in the Being of God. Shedd speaks of them as "an analytical and closer description of the essence."5 In a sense they are identical, so that it can be said that God's perfections are God Himself as He has revealed Himself to us. It is possible to go even farther and say with Shedd, "The whole essence is in each attribute, and the attribute in the essence."6 And because of the close relation in which the two stand to each other, it can be said that knowledge of the attributes carries with it knowledge of the Divine Essence. It would be a mistake to conceive of the essence of God as existing by itself and prior to the attributes, and of the attributes as additive and accidental characteristics of the Divine Being. They are essential qualities of God, which inhere in His very Being and are co-existent with it. These qualities cannot be altered without altering the essential Being of God. And since they are essential qualities, each one of them reveals to us some aspect of the Being of God.”
― Louis Berkhof, Systematic Theology