'Redeem' in the Bible

They are Your servants and Your people whom You redeemed by Your great power and by Your strong hand.

Yet now our flesh is as the flesh of our brethren, our children as their children: and, lo, we bring into bondage our sons and our daughters to be servants, and some of our daughters are brought unto bondage already: neither is it in our power to redeem them; for other men have our lands and vineyards.