If the universe was at one time non existent how then could it have created itself as it would not have been in existence to do so?
A power or force outside existence that had never been born and always existed would be the only power to be able to bring existence Into existence because if we are saying time was not in existence to create itself then A Timeless or Eternal Being created it. Also, intelligence is found in existence and it did not create itself.
This is an argument from ignorance.
Reality does not conform to our everyday experience of the world. At the string, quantum, even relativistic levels it's bizarre, counter-intuitive and flies in the face of commonsense; "spooky," as Einstein put it.
Till you can understand the theoretical physics involved, I wouldn't be so quick to dismiss the possibility of a universe creating itself.
If you'd lived a thousand years ago, LoH, I'll bet you'd be using the same "reasoning" to support a divine origin for volcanoes, storms, earthquakes, northern lights, &c.
The intelligence and complexity of the human body for example could not have come about by a random act. It's cells are organised and it contains DNA and gene mapping which is all highly intelligent. Composition and decomposition, a process which occurs whether we are here or not is perpetuated by another force not us. We call it God but know very little about God except what Prophets have said.
Only an All Knowing and All Intelligent Existence could have initiated existence not a random occurrence.
No-one is proposing any "random occurrence." You're arguing from incredulity.
The mechanisms which gave rise to this 'paragon of animals' are clear and understandable, if you'd take the time to explore them.
Your conclusion that God is the only reasonable alternative doesn't follow, nor does it explain anything. It's a false dilemma; an appeal to magic.
According to Genesis 1:1 the universe ( heavens ) had a start or a beginning.
God provided the needed dynamic energy (power and strength) to create the universe, so it was from God's power that the universe came.
- Isaiah 40:26; Jeremiah 10:2; 27:5; 32:17; Psalms 104:30
This is simplistic nonsense. "Power and strength" is poetry; not physics, not mechanism. And I question your textbook. It doesn't pass scientific muster.