Westminster Shorter Catechism
Q. 9. What is the work of creation?
A. The work of creation is God’s making all things of nothing, by the word of his power, in the space of six days, and all very good.
Though the creation account in Genesis 1-2 emphasizes the beginning of the visible universe with all its vast diversity, the Scriptures also teach that the triune God is the Creator of all things invisible. The invisible world, which includes the angels, heaven, and hell, was also brought into being by divine fiat.
According to Scripture, God brought all things into existence without the use of any prior existing matter. He created ex nihilo. God spoke, and by a fiat of His will all things came into existence (Gen. 1:3, 6, 9, 11,14, 20, 24, 26; Ps. 33:9; Heb. 11:3). The transcendent, eternal, infinite, omnipotent, omnipresent God created in order to reveal Himself and His goodness to His creatures. God is the foundation of all goodness, so He made the material world very good at the beginning. Creation is also the foundation of all divine revelation, for it is the theater in which God reveals His own goodness. As Geerhardus Vos noted: “A God who by a self-conscious act of freedom brings the universe into existence cannot desire to do anything other than to reveal Himself directly in an unmistakable way to the world thus created. A God who as Creator of the world maintains interest in the world will not let that world exist without proper, sufficient knowledge of Himself.”
These truths stand in stark contrast to Pantheism which is the idea that all things are God and makes no distinction between the Creator and His creation.
Read Hebrews 11:3