TSK · Exodus 8:28

I know that the king of Egypt won't give you permission to go, no, not by a mighty hand.

Then Pharaoh called for Moses and Aaron, and said, "Entreat Yahweh, that he take away the frogs from me, and from my people; and I will let the people go, that they may sacrifice to Yahweh."

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."

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

that they may offer sacrifices of pleasant aroma to the God of heaven, and pray for the life of the king, and of his sons.

Their heart is divided. Now they will be found guilty. He will demolish their altars. He will destroy their sacred stones.