NET

15 Recall that you were slaves in the land of Egypt and that the Lord your God brought you out of there by strength and power. That is why the Lord your God has commanded you to observe the Sabbath day.

Darby

15 And thou shalt remember that thou wast a bondman in the land of Egypt, and that Jehovah thy God brought thee out thence with a powerful hand and with a stretched-out arm; therefore Jehovah thy God hath commanded thee to observe the sabbath day.

KJV

15 And remember that thou wast a servant in the land of Egypt, and [that] the LORD thy God brought thee out thence through a mighty hand and by a stretched out arm: therefore the LORD thy God commanded thee to keep the sabbath day.