Original Verse:
Exodus Chapter 6 Verse 5And moreover I have heard the groaning of the children of Israel, whom the Egyptians keep in bondage; and I have remembered my covenant.

Reference Verses:
Exodus Chapter 2 Verse 23And it came to pass in the course of those many days, that the king of Egypt died: 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.
Exodus Chapter 2 Verse 24And God heard their groaning, and God remembered his covenant with Abraham, with Isaac, and with Jacob.
Exodus Chapter 5 Verse 4And the king of Egypt said unto them, Wherefore do ye, Moses and Aaron, loose the people from their works? get you unto your burdens.