'Entreat the Lord' in the Bible

Then Pharaoh called for Moses and Aaron and said, “Plead with the Lord that He may take away the frogs from me and my people; and I will let the people go, so that they may sacrifice to the Lord.”

Moses said, “I am going to leave you, and I will urgently petition (pray, entreat) the Lord that the swarms of insects may leave Pharaoh, his servants, and his people tomorrow; only do not let Pharaoh act deceitfully again by not letting the people go to sacrifice to the Lord.”

Pray and entreat the Lord, for there has been enough of God’s thunder and hail; I will let you go, and you shall stay here no longer.”

Now therefore, please forgive my sin only this once [more], and pray and entreat the Lord your God, so that He will remove this [plague of] death from me.”