Exodus 10:24-29

And Pharaoh called unto Moses, and said, Go ye, serve Jehovah; only let your flocks and your herds be stayed: let your little ones also go with you. And Moses said, Thou must also give into our hand sacrifices and burnt-offerings, that we may sacrifice unto Jehovah our God. Our cattle also shall go with us; there shall not a hoof be left behind: for thereof must we take to serve Jehovah our God; and we know not with what we must serve Jehovah, until we come thither. But Jehovah hardened Pharaoh’s heart, and he would not let them go. And Pharaoh said unto him, Get thee from me, take heed to thyself, see my face no more; for in the day thou seest my face thou shalt die. And Moses said, Thou hast spoken well; I will see thy face again no more.