I can agree with that. He is the source and sustainer of all things.
Yes, which is why I say that God’s infinite power implies omnipresence (per Psa. 139:7-8). God transcends spatial existence while being immanent in all points of space. (Other scriptural support for this view includes 1Kings 8:27, Isa. 66:1, Jer. 23:33, Acts 17:27-28 and Eph. 4:6.)
God’s superiority over His creation must be viewed as a matter of degree or quantitatively in order to preserve the continuity between God and humanity that would be requisite for communication (like the need for a common language and culture cited in Part I).
However, the Bible teaches that God also differs from creatures qualitatively, so that attaining equality with Deity is impossible (Isa. 55:9, Eph. 3:19). We can be like God (Gen. 3:3), and we can become one with the Son of God (John 17:21-23), but we cannot become God (cf. Humanism).
According to the Bible, God created everything else that exists (Gen. 1:1, Jer. 10:16, John 1:1-3), including the ability by volitional beings (souls) to choose to rebel against His Lordship (Gen. 2:16, Deut. 30:19). Our finite minds cannot comprehend how God does this (Isa. 40:28). However, neither are we able to understand why the universe exists without God (John 3:8).
Theistic and atheistic cosmologies are both mind-boggling! Just as atheists believe that somehow the world always existed and somewhat intelligent beings evolved, so theists believe that for some reason the eternal Intelligence or Spirit of God created and pervades the physical universe, including the brains of those who freely will to spit in His face (Rom. 5:6-8, Matt. 27:30)! (What God was doing before the creation of time/space is as inconceivable as nothing/atheism.)