'Taskmasters' in the Bible

And Jehovah said, I have seen assuredly the affliction of my people who are in Egypt, and their cry have I heard on account of their taskmasters; for I know their sorrows.

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

And the taskmasters of the people and their officers went out and spoke to the people, saying, Thus says Pharaoh: I will not give you straw:

And the taskmasters urged them, saying, Fulfil your labours, the daily work, as when there was straw.

And the officers of the children of Israel, whom Pharaoh's taskmasters had set over them, were beaten, and it was said, Why have ye not fulfilled your task in making brick, both yesterday and to-day, as heretofore?