God, being the cause of the universe, did not instigate the universe, but is the reason the universe exists, as pointed out in that thread. Additionally, God creates (in time) each and every little thing within the universe, but it is important to first realize that God did not initiate or instigate the universe. The universe, just as God, has always been and is eternal. There can never be a “no universe state” of reality. It takes some serious metaphysics to understand exactly why that is true and I don’t expect you to just take my word for it. I pointed it out because it is said that God creates, which is correct, and it is said that God causes which is correct as long as you understand that God never began the universe, but is the reason it exists. God is the Truth that causes all else to be truth that really is true.
Just for the record, when James S Saint claims the universe is eternally co-existent with God he is NOT in accordance with the beliefs of the Catholic Church. Catholics hold that one of the basic definitions about God is that God is greater than everything. To theorize that something else co-existed with God from all eternity is to try to make God something less than what He is: the source and creator of everything. The abstract philosophy called metaphysics is something defined by man, and being a creation of man’s intellect it is subject to serious error.
Catechism of the Catholic Church
295 We believe that God created the world according to his wisdom. It is not the product of any necessity whatever, nor of blind fate or chance. We believe that it proceeds from God’s free will; he wanted to make his creatures share in his being, wisdom and goodness: “For you created all things, and by your will they existed and were created.” Therefore the Psalmist exclaims: “O LORD, how manifold are your works! In wisdom you have made them all”; and “The LORD is good to all, and his compassion is over all that he has made.”
God creates "out of nothing"
**296 **We believe that God needs no pre-existent thing or any help in order to create, nor is creation any sort of necessary emanation from the divine substance. God creates freely “out of nothing”:
If God had drawn the world from pre-existent matter, what would be so extraordinary in that? A human artisan makes from a given material whatever he wants, while
God shows his power by starting from nothing to make all he wants.
**297 **Scripture bears witness to faith in creation “out of nothing” as a truth full of promise and hope. Thus the mother of seven sons encourages them for martyrdom:
“I do not know how you came into being in my womb. It was not I who gave you life and breath, nor I who set in order the elements within each of you. Therefore the Creator of the world, who shaped the beginning of man and devised the origin of all things, will in his mercy give life and breath back to you again, since you now forget yourselves for the sake of his laws. . . Look at the heaven and the earth and see everything that is in them, and recognize that
God did not make them out of things that existed. Thus also mankind comes into being.” 2 Macc 7:22-23, 28
**298 **Since God could create everything out of nothing, he can also, through the Holy Spirit, give spiritual life to sinners by creating a pure heart in them, and bodily life to the dead through the Resurrection. God "gives life to the dead and calls into existence the things that do not exist."and since God was able to make light shine in darkness by his Word, he can also give the light of faith to those who do not yet know him.