Exodus 5:2-3

“Is that so?” retorted Pharaoh. “And who is the LORD? Why should I listen to him and let Israel go? I don’t know the LORD, and I will not let Israel go.” But Aaron and Moses persisted. “The God of the Hebrews has met with us,” they declared. “So let us take a three-day journey into the wilderness so we can offer sacrifices to the LORD our God. If we don’t, he will kill us with a plague or with the sword.”