Exodus 2:23

And it came to pass: in process of time that the king of Egypt died, the Pharaoh on whose account Moses had found it necessary to flee; and the children of Israel sighed by reason of the bondage, and they cried, and their cry came up unto God by reason of the bondage. This was many days, about forty years, after the flight of Moses. The oppression of the children of Israel continued also under the new Pharaoh, and since they had hoped for some relief, their crying arose to heaven with all the greater fervency.