Exodus 5:7 (KJV)

And Pharaoh said, Who is the LORD, that I should obey his voice to let Israel go? I know not the LORD, neither will I let Israel go.

And they said, The God of the Hebrews hath met with us: let us go, we pray thee, three days' journey into the desert, and sacrifice unto the LORD our God; lest he fall upon us with pestilence, or with the sword.

And the king of Egypt said unto them, Wherefore do ye, Moses and Aaron, let the people from their works? get you unto your burdens.

And Pharaoh said, Behold, the people of the land now are many, and ye make them rest from their burdens.

And Pharaoh commanded the same day the taskmasters of the people, and their officers, saying,

And the tale of the bricks, which they did make heretofore, ye shall lay upon them; ye shall not diminish ought thereof: for they be idle; therefore they cry, saying, Let us go and sacrifice to our God.

Let there more work be laid upon the men, that they may labour therein; and let them not regard vain words.

And the taskmasters of the people went out, and their officers, and they spake to the people, saying, Thus saith Pharaoh, I will not give you straw.

Go ye, get you straw where ye can find it: yet not ought of your work shall be diminished.

So the people were scattered abroad throughout all the land of Egypt to gather stubble instead of straw.