And that is their understanding of God. Very similar to a couple of innovations of Christianity who were influenced strongly by Islam. A view of God as a wrathful, sullen omnipotent tyrant, interspersed with occasional bouts of undeserved generosity and favour. A God of fear and retribution. Whereas Christians look to:
John 13: 34 I give you a new commandment: 12 love one another. As I have loved you, so you also should love one another. 35 This is how all will know that you are my disciples, if you have love for one another."
For the Muslims, their god is NOT the Father; he is a whimsical tyrant destroyer. Kinda reminds me of the gist of the beliefs of some who debate us.
The Church has taken the position that Mohammad did not create a god because there is only one God. Mohammad did not change God because because God is omnipotent. Mohammad could only incorrectly describe God.