Numbers 21:7

And Abraham prayed to God, and God healed Abimelech and his wife and his maidservants, so that they bore children.

Then Pharaoh called for Moses and Aaron and said, “Entreat Yahweh that He may cause the frogs to depart from me and from my people; and I will let the people go, that they may sacrifice to Yahweh.”

The people therefore cried out to Moses, and Moses prayed to Yahweh, and the fire died out.

Then Jehoahaz entreated the face of Yahweh, and Yahweh listened to him; for He saw the oppression of Israel, how the king of Aram oppressed them.

When He killed them, then they sought Him, And returned and sought earnestly for God;

But Simon answered and said, “Pray earnestly to the Lord for me yourselves, so that nothing of what you have said may come upon me.”