If thou buy a Hebrew servant, six years he shall serve: and in the seventh he shall go out free for nothing.
And if thy brother be waxed poor with thee, and sell himself unto thee; thou shalt not make him to serve as a bond-servant.
At the end of seven years ye shall let go every man his brother that is a Hebrew, that hath been sold unto thee, and hath served thee six years, thou shalt let him go free from thee: but your fathers hearkened not unto me, neither inclined their ear.