'Free' in the Bible

"If you buy a Hebrew servant, he shall serve six years and in the seventh he shall go out free without paying anything.

But if the servant shall plainly say, 'I love my master, my wife, and my children. I will not go out free;'

If he doesn't do these three things for her, she may go free without paying any money.

"If a man strikes his servant's eye, or his maid's eye, and destroys it, he shall let him go free for his eye's sake.

If he strikes out his male servant's tooth, or his female servant's tooth, he shall let him go free for his tooth's sake.