'Free' in the Bible

If thou buy a Hebrew bondman, six years shall he serve; and in the seventh he shall go out free for nothing.

But if the bondman shall say distinctly, I love my master, my wife, and my children, I will not go free;

And if he do not these three things unto her, then shall she go out free without money.

And if he knock out his bondman's tooth or his handmaid's tooth, he shall let him go free for his tooth.