Exodus 10:25-27

Young's Literal Translation

²⁵ and Moses saith, `Thou also dost give in our hand sacrifices and burnt-offerings, and we have prepared for Jehovah our God;

²⁶ and also our cattle doth go with us, there is not left a hoof, for from it we do take to serve Jehovah our God; and we -- we know not how we do serve Jehovah till our going thither.'

²⁷ And Jehovah strengtheneth the heart of Pharaoh, and he hath not been willing to send them away;