'Pray' in the Bible

Moses said to Pharaoh, "I give you the honor of setting the time that I should pray for you, and for your servants, and for your people, that the frogs be destroyed from you and your houses, and remain in the river only."

Pharaoh said, "I will let you go, that you may sacrifice to Yahweh your God in the wilderness, only you shall not go very far away. Pray for me."

Moses said, "Behold, I go out from you, and I will pray to Yahweh that the swarms of flies may depart from Pharaoh, from his servants, and from his people, tomorrow; only don't let Pharaoh deal deceitfully any more in not letting the people go to sacrifice to Yahweh."

Pray to Yahweh; for there has been enough of mighty thunderings and hail. I will let you go, and you shall stay no longer."

Now therefore please forgive my sin again, and pray to Yahweh your God, that he may also take away from me this death."