I'm not clear on what you mean by faith in God, although, I do believe in the existence of God.
You seem to be very clear. Belief in the existence of God, is the primary ingredient of faith.
The word 'faith' has been difficult to delineate as it is often misused. People have been known to ask, "what faith are you.", when they mean "what religion".
God 'created' the physical, the material universe. Science is man using his GOD-given abilities to understanding that physical/material universe.
Since we are 'of' that physical/material world, it is not possible to go beyond it, to explain it, to see if from the outside.
The BEGINNING, the END, of the universe? We cannot know these things.
Take this story. Two hundred billion years from now, the universe ENDED. There was no living creature on Earth, or any other body in the universe to see it. There was nothing to see as all stars had expended (converted) their energy. All differences in potential had come to a balance.
SO. Nothing was happening, and Nothing was there to notice.
No 'matter', No 'mind'.
believing a meal exist does not do a starving man any good until he actively eats it.