'Miraculous' in the Bible

"When Pharaoh says to you, "Perform a miraculous sign,' then you are to say to Aaron, "Take your staff and throw it in front of Pharaoh.' It will become a serpent."

Then the Lord said to Moses, “Go to Pharaoh, for I have hardened his heart and the hearts of his officials so that I may do these miraculous signs of Mine among them,

and so that you may tell your son and grandson how severely I dealt with the Egyptians and performed miraculous signs among them, and you will know that I am Yahweh.”

Then the LORD said, "I'm now going to make a covenant. I'll do miraculous deeds in full view of your people that haven't been done in all the earth or in any nation. All the people among whom you live will see the work of the LORD, because it's an awesome thing that I'll do with you.