Exodus 9:1

Then Yahweh said to Moses, “Go in to Pharaoh, and tell him, ‘This is what Yahweh, the God of the Hebrews, says: “Let my people go, that they may serve me.

Then the LORD said unto Moses, Go in unto Pharaoh, and tell him, Thus saith the LORD God of the Hebrews, Let my people go, that they may serve me.