Exodus 5:9, 19, 23

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

And the officers of the children of Israel did see that they were in evil case, after it was said, Ye shall not minish ought from your bricks of your daily task.

For since I came to Pharaoh to speak in thy name, he hath done evil to this people; neither hast thou delivered thy people at all.