Bible Verses About Unbelief: Questioning the power of God

Then the captain on whose hand the king leaned answered the man of God, and said, “Behold, if the LORD made windows in heaven, could this thing be?” He said, “Behold, you shall see it with your eyes, but shall not eat of it.”

Yes, they spoke against God. They said, “Can God prepare a table in the wilderness?

Behold, he struck the rock, so that waters gushed out, and streams overflowed. Can he give bread also? Will he provide flesh for his people?”