"Yet mine understanding took that our Substance is in God: that is to say, that God is God, and our Substance is a creature in God."
Julian of Norwich (Ch. 54)
We are indwelt by God. We come from God. We are made of God. We are one with God. Yet we are not God. It is true that there is no difference between our substance or essence and God, because we are made in our depths of God Himself. Thus we are expressions of God. Yet we are individuated, we are individuals, we have distinction from God. And we are created, not Creator. We are made, not unmade. We are not divine life, He is. We are like vessels and He is the wine. We are not the life, we simply contain it and are invigorated by it.
So we can say that our substance is one with God but is not God; instead our substance is a created being that is in God. We exist only in God. We are of God's own being and therefore good and godlike. But we also realize that we are not God but creatures made by God, creatures that have being within God. Thus we are never outside of Him. Nothing in this universe is, in fact. Everything that is made and everything that happens, all of creation, space, time and history is within God. There is no outside. So we don't have to worry about being apart from God and needing to somehow get to God or overcome some barrier to union with God. We are always in Him. That is a fact of our creation. We are creatures in God and there just isn't any "out of God." So we are safe. We will always be in Him. We always have been and always will be. There is simply no other place to be!
"Everything got started in him and finds its purpose in him."
Colossians 1:16 (MSG)
"In His hand is the life of every living thing and the breath of all mankind."
Job 12:10 (AMPC)
A Prayer: I am always in You!