God does not change. God is perfect. Therefore, God is transcendent.
Malachi 3:6 “I the LORD do not change. So you, O descendants of Jacob, are not destroyed”
James 1:17 Every good and perfect gift is from above, coming down from the Father of the heavenly lights, who does not change like shifting shadows.
That is, he is above his creation and wholly ‘other’ from his creation.
God is simultaneously omnipresent and the only tension that can be perceived there is imposed by us human beings. If we understand that God is Love and created us out of love than we can see how his presence is immanent yet, transcendent.
The mystics offer us, if you will, an opportunity to see how this may be so. The mystic is in the world yet communicates with God who is transcendent. Actually, many people have a personal relationship with God and have no problem knowing that he is transcendent and omnipresent.
I think the difficulty comes in when we try to impose our intellectual conceptions on the mind and God. I think that a better approach is to approach God as an innocent child and let him tell us about himself. He will guide us to see things and understand concepts that on our own we are unable. It is God who gives wisdom and all we need to do is put our pride aside and be humble and with an open heart and mind let him know that you want to get to know him.