All the plagues of Egypt were smaller miracles than changing Pharaoh’s heart.
It would be easier to freeze bullets in the air (inanimate objects that process no freewill) than it is to convince the world to lay down their arms in a spirit of peace.
If people pray, let them pray to change their own hearts, because that’s the bigger mountain to move.
It took lots of suffering to change Pharaoh’s mind. How much does it take to change yours?