Exodus 10:25-27

King James Version

²⁵ And Moses said, Thou must give us also sacrifices and burnt offerings, that we may sacrifice unto the Lord our God.

²⁶ Our cattle also shall go with us; there shall not an hoof be left behind; for thereof must we take to serve the Lord our God; and we know not with what we must serve the Lord, until we come thither.

²⁷ But the Lord hardened Pharaoh's heart, and he would not let them go.