Exodus 9:1-3

American Standard Version

9 Then Jehovah said unto Moses, Go in unto Pharaoh, and tell him, Thus saith Jehovah, the God of the Hebrews, Let my people go, that they may serve me. ² For if thou refuse to let them go, and wilt hold them still, ³ behold, the hand of Jehovah is upon thy cattle which are in the field, upon the horses, upon the asses, upon the camels, upon the herds, and upon the flocks: there shall be a very grievous murrain.