It is hard to understand GOD in human terms because he is not human ... this is something we tend to forget ... also GOD operates in the Spiritual Realm and we come to believe in him by Faith. We believe what the bible says about HIM creating heavens and earth. We also have the testimony of Jesus, who we as Christians confess is the Son of God. So it is a matter of FAITH, of believing because God says so “without faith it is impossible to please [God]” (Heb. 11:6). “Now faith is the substance of things hoped for, the evidence of things not seen.”
Christ asked, “When the Son of Man comes, shall He find faith on the earth?” (Luke 18:8).
As I said before, God is in the spiritual realm. In order to have faith it is necessary to have the fruits of the spirit ... Galatians 5:22-23: “But the fruit of the Spirit is love, joy, peace, long-suffering, gentleness, goodness, faith, meekness, temperance: against such there is no law.” Real faith comes from the Spirit of God—it is a fruit of the Holy Spirit. No one can have it without God’s Spirit.
So in my case I go on believing what I believe because I have FAITH.
"He sits enthroned above the circle of the earth, and its people are like grasshoppers. He stretches out the heavens like a canopy, and spreads them out like a tent to live in."
Job 37:18 can you join him in spreading out the skies, hard as a mirror of cast bronze?
Job 9:8 He alone stretches out the heavens and treads on the waves of the sea.
Isaiah 45:12 It is I who made the earth and created mankind upon it. My own hands stretched out the heavens; I marshaled their starry hosts.