Rev. Matthew Winzer,
may I ask what the practical differences are between God having and God being something? Do we, as mere creatures, only have some of God's attributes, or can it also be said of us that we are love, righteousness, wisdom, etc. (although in a limited measure)? Again, what's the difference between having and being something?
Samuel, if I may venture an answer, it is not proper to speak of God as having, e.g., wisdom, instead of being wisdom, because wisdom is not separable from God. With God to be, and to be wise, or powerful, or holy, are not different things. In other words, there are no accidents in God. Now for creatures it is possible to have many accidental qualities that are separable from us without affecting our essence. To take a ludicrous example, a tattooed person and a non-tattooed person are equally human: the quality of having tattoos is accidental - it is separable from the essence. But God has no such separable qualities. As Polanus said, Though essence and existence differ in creatures, they do not do so in God.
Sorry for missing your question, Samuel. Thanks to Ruben for picking it up. Ruben answers why we must affirm having and being are one in God. The analogy in us helps to clarify the difference. Take "goodness." Imagine if one were to say, "Samuel is goodness." That would convey the idea that Samuel is the sum, substance, and standard of all goodness. It is unbecoming. Instead one says, Samuel is a good man. Goodness is a quality that attaches to what Samuel is. Goodness cannot be a quality that attaches to Godhood. There is none good but one, that is God. He is essentially good, and good in a way that none other can be. This means He is the sum, substance, and standard of all goodness. It is impossible to liken anything to God for goodness -- He is its sum. It is impossible to suppose that He can be other than good -- He is its substance. And it is impossible to subject Him to goodness -- He is its standard.