GOD can use a baby's smile to heal the broken-hearted, a child’s walk to save the misdirected, a woman's wit, a man's senses, a buzzing fly, a moving train, a lost coin, a manifold stack of cards.
This Hail, the eighth sign from GOD, was greater than anything Egypt had seen. It was hail of ice and darts of fire. Only the finger of GOD could fight men in their own conjoined battles and win beyond interpretation.
So for Pharaoh, it was GOD's way of stretching his doubt to its limits; how far could his query of GOD go? However, Pharaoh did believe. In the moment of torment, in the evidence that these things were by the hand of GOD, Pharaoh believed.
Whether, we can analyse the reason why HE does what HE does, it is certain that GOD is in the business of stunning us with the impossible to do what is made possible only by HIM.
One reason why GOD doesn’t make sense to humans who are armed with their worldview of disbelief and doubt is because there is an answer of pride to the question of what the reason of existence is.
The plagues upon Egypt were GOD's way of letting Pharaoh know that there was more that he did not know and more than he did know.
Because Pharaoh did not know the LORD, when the LORD said, “let there be…” he said, “why should there be?” all those who question GOD to put off the flame speaking to them do not know the LORD. Then again, they do not want to know the Lord. If so, they wish, by influence the enemy of their souls, to perish from lack of knowledge.
It would be more hopeless than it seems, it is more impossible that your widest pessimistic speculation. Think of the worst scenario then think of something worse than the worst. Yet, with all these odds shouting that it is not a risk worth taking, GOD says, “go”.
You are wrong. When you say you can’t go, it is terrible of you to forget in split seconds of doubt the possibility of ability that emits from your capacity. “Can” shows ability, all can be done.