Exodus 5:5-9

5And Pharaoh said, Behold, the people of the land now are many, and ye make them rest from their burdens. 6And Pharaoh commanded the same day the taskmasters of the people, and their officers, saying, 7Ye shall no more give the people straw to make brick, as before: let them go and gather straw for themselves. 8And the number of the bricks, which they made before, ye shall lay upon them; ye shall not diminish any of it: for they are idle; therefore they cry, saying, Let us go and sacrifice to our God. 9Let more work be laid upon the men, that they may labour in it; and let them not regard vain words.1