Then the LORD said to Moses, “Go to Pharaoh and tell him that this is what the LORD, the God of the Hebrews, says: ‘Let My people go, so that they may worship Me.
Jewish Publication Society of America Version (JPS1917) - Exodus 9:1 >Then the LORD said unto Moses: 'Go in unto Pharaoh, and tell him: Thus saith the LORD, the God of the Hebrews: Let My people go, that they may serve Me.