Exodus 9:2 KJV
For if thou refuse to let them go, and wilt hold them still,
Exodus 9:2, King James Version
In context
1 Then the Lord said unto Moses, Go in unto Pharaoh, and tell him, Thus saith the Lord 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 the Lord is upon thy cattle which is in the field, upon the horses, upon the asses, upon the camels, upon the oxen, and upon the sheep: there shall be a very grievous murrain.