Exodus 1:14
And they made their lives bitter with hard bondage, in mortar, and in brick, and in all manner of service in the field: all their service, wherein they made them serve, was with rigor.
Nave's Topical Index—AKJV

Exodus 2:23
And it came to pass in process of time, 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 to God by reason of the bondage.
Nave's Topical Index—AKJV

Exodus 6:6
Why say to the children of Israel, I am the LORD, and I will bring you out from under the burdens of the Egyptians, and I will rid you out of their bondage, and I will redeem you with a stretched out arm, and with great judgments:
Nave's Topical Index—AKJV