Leviticus 25:50

“And he shall reckon with him that bought him, etc.] That is, either the man himself should reckon with him, or whoever undertook to redeem him: from the year that he was sold to him unto the year of jubilee; and so count how many years he had served, and how many were yet to come; and by this it appears, that one thus sold was not released at the end of six years, or the sabbatical year did not free him: and the price of his sale shall be according to the number of years; whether more or fewer, as after explained: according to the time of an hired servant shall it be with him; the time of service he had served his master shall be reckoned, as if he had been hired for so much a year; and…”

“A sojourner or stranger - Rather, a foreigner who has settled among you. See Leviticus 16:29, note; Exodus 20:10, note. Leviticus 25:54 In these years - More properly, by one of these means. The extreme period of servitude in this case was six years, as when the master was a Hebrew Exodus 21:2. Looking at the law of the Jubilee from a simply practical point of view, its operation must have tended to remedy those evils which are always growing up in the ordinary conditions of human society. It prevented the permanent accumulation of land in the hands of a few, and periodically raised those whom fault or misfortune had sunk into poverty to a position of competency. It must also have tended to…”

“According to the time of an hired servant - Allowance shall be made for the time wherein he hath served, proportionable to that which is given to an hired servant for so long service, because his condition is in this like theirs; it is not properly his person, but his work and labour that was sold. Leviticus 25:53”

“reckon: Lev 25:27 price of his sale: This was a very equitable law, both to the sojourner to whom the man was sold, and to the Israelite who had been sold. The Israelite might redeem himself, or one of his kindred might redeem him; but this must not be done to the prejudice of his master. They were therefore to reckon the years he must have served, from that time till the jubilee; and then taking the current wages of a servant, per year, at that time, multiply the remaining years by that sum, and the aggregate was to be given to his master for his redemption. The Jews hold that the kindred of such a person were bound, if in their power, to redeem him, lest he should be swallowed up among the…”