The oneness of God is on the level of substance, quality, and power, whereas the distinctions are the level of degree, form, and aspect. Why? Because the economy of God is a Trinity. It is here that the term trinitas is used for the first time to describe the Christian understanding of who God is. In this, Tertullian is going to give us the first language by which to speak of God. Tertullian is asking us to move away from preconceived notions and think about the difference between surface grammar