If you believe that God came before man, then most likely you believe that God offers the authoritative narrative on His own existence and exposes the fiction of complete and undirected randomness coming together in the formation of man and creation.
To those dismissive of God, the notion of such a Divine, All powerful, All knowing and All present being is unintelligent folly, and embraces human existence as that which is limited by "natural Law." Man is the center of such a universe and His happiness is the highest priority of his existence.
The Bible indicates that God's highest purpose in our lives is not our circumstantial happiness but our positional joy realized through the formation of His Son's likeness in our lives.
Theology is the study of God. Anthropology is the study of man. Without the Holy Spirit as our instructor we would fail in the study of both.
I believe that that God is the Uncaused Cause.
When God refers to Himself as the "I AM", that conveys that He is eternally self existent and that He is not propped up by that (man) which is utterly dependent upon Him for existence.
1 Corinthians 1:26 For you see your calling, brethren, that not many wise according to the flesh, not many mighty, not many noble, are called. 27 But God has chosen the foolish things of the world to put to shame the wise, and God has chosen the weak things of the world to put to shame the things which are mighty; 28 and the base things of the world and the things which are despised God has chosen, and the things which are not, to bring to nothing the things that are, 29 that no flesh should glory in His presence. 30 But of Him you are in Christ Jesus, who became for us wisdom from God - and righteousness and sanctification and redemption - 31 that, as it is written, “He who glories, let him glory in the Lord.”