Therefore, say to the Israelites: I am the LORD. I will free you from the burdens of the Egyptians and will deliver you from their slavery. I will redeem you by my outstretched arm and with mighty acts of judgment. I will take you as my own people, and I will be your God; and you will know that I, the LORD, am your God who has freed you from the burdens of the Egyptians
Exodus 6:6–7