How Great is this God?

Our human mind has been created with the capacity for growth and expansion. As we allow the mind to work, dream and think, it grows. When it comes to understanding God however, there's a limit to the human mind. Here's a God who does the miraculous with the most unlikely of materials- making an iron axe-head float in water, feeding 5,000 with 5 loaves of bread, and paying tax from a fish's mouth. If he does these things, why do we doubt him on the issues of life? If he created ALL things, what can be outside the sphere of his control? If he's the Lord of ALL the earth, the earth must therefore answer to his demand. If we can trust his power today, I believe he's more than able to deliver.
I just read a testimony of a lady getting pregnant without a cervix. Don't believe everything science tells you; hold on to what the omniscience himself says. He's got the final say on ALL matters of life and death.