'Free' in the Bible

'If you buy a Hebrew slave, he will serve six years, and in the seventh he will go out as free for nothing.

But if the slave explicitly says, "I love my master, my wife, and my children; I will not go out free,"

" 'And if a man strikes the eye of his male slave or the eye of his female slave and destroys it, he shall release him as free in place of his eye.

And if he causes the tooth of his male slave or the tooth of his female slave to fall out, he will release him as free in place of his tooth.