The relevant passages are Exodus 21:24, 25, Leviticus 24:20, & Deuteronomy 19:21.
The question is whether this was to be understood in its literal sense or as a principle of establishing a fine system that as closely as possible would value the bodily loss in addition to providing for the loss of ones living, or whatever other non-literal method can be offered. I'm especially interested in how those who have a high view of the Mosaic Law and it's importance today understand this, since they are more likely to give a worthy response. (As a sidenote: I don't have any negative connotations towards your endeavor to understand this law correctly; I myself ain't happy with how this law of retaliation has come to denote the Mosaic Law as primitive and vengeful.)
But a fair follow up response one might have, should the literal sense be not necessary, is how exactly this might have look and what system would that be (the one I proposed is mostly mine conjecture). Historical Jewish practices and records would be helpful. We might be able to overlook the passages' stark literal propensity towards a literal sense for now.
There is one way to understand this correctly.
First you must believe the following statement to be absolutely true:
Romans 7:14
14
For we know that the Torah is spiritual: but I am carnal, sold under sin.
The Torah is spiritual, and we wrestle not against flesh and blood, (Eph 6:10-17), and sin and evil are personified, (re: Rom 7:14-25). There are therefore commandments in the Torah which pertain to our interactions with other human beings, and commandments which pertain to spiritual things, both good and evil, such as sin, evil, and dark forces including the so-called
evil inclination, which is essentially the
old man natural or carnal minded nature. The
old man is
palaios anthropos, which tells us that sin and evil are not only personified but sometimes may even be personified as either a man or a woman, (perhaps depending on the temptation,
the false prophetess spirit of Jezebel, etc., (Rev 2:20).
What therefore is the Master telling us in the following statement? Is he overturning or setting aside the commandment? Absolutely not: it is rather by the context that
those of old time, (Mat 5:21), had
misinterpreted and misunderstood the passages in question which you have referenced at the top of your opening post.
Matthew 5:38-42 KJV
38 Ye have heard that it hath been said, An eye for an eye, and a tooth for a tooth:
39 But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also.
40 And if any man will sue thee at the law, and take away thy coat, let him have thy cloke also.
41 And whosoever shall compel thee to go a mile, go with him twain.
42 Give to him that asketh thee, and from him that would borrow of thee turn not thou away.
Note what he gives for examples:
resist not evil, but whosoever shall smite thee on thy right cheek, turn to him the other also. And if any man will sue thee at the law, and take away thy coat, let him have thy cloke also. And whosoever shall compel thee to go a mile, go with him twain.
It is obvious that he is speaking of physical interactions with fellow human beings, friends, neighbors, family, and even anyone who would make himself/herself out to be your enemy, despite the fact that our true enemies are not flesh and blood. Therefore the commandments that deal with interactions between human beings are the ones related to what he says:
love your neighbor as yourself, treat others as you would also like to be treated, be angry but let not the sun go down on your anger, you shall not murder-kill, if you forgive men their trespasses then your heavenly Father will forgive your trespasses, and so on and so on.
Therefore the commandment in question from the Torah passages pertains to spiritual dark forces.
From the very same passage-discourse:
Matthew 5:29-30 KJV
29 And if
thy right eye offend thee, pluck it out, and cast it from thee: for it is profitable for thee that
one of thy members should perish, and not that thy whole body should be cast into hell.
30 And if
thy right hand offend thee, cut it off, and cast it from thee: for it is profitable for thee that
one of thy members should perish, and not that thy whole body should be cast into hell.
Matthew 18:8-9 KJV
8 Wherefore if
thy hand or
thy foot offend thee, cut them off, and cast them from thee: it is better for thee to enter into life halt or maimed, rather than having two hands or two feet to be cast into everlasting fire.
9 And if
thine eye offend thee, pluck it out, and cast it from thee: it is better for thee to enter into life with one eye, rather than having two eyes to be cast into hell fire.
Back to Romans 7 ~ sin dwells in the flesh, (Rom 7:18), and there is a war in our members, (Mat 5:29-30, Rom 7:14-25), and sin is personified even as a man, the
palaios anthropos old man, (nature), which is not flesh and blood.
Zechariah 11:8-11 KJV
8 Three shepherds also I cut off in one month; and my soul lothed them, and their soul also abhorred me.
9 Then said I, I will not feed you: that that dieth, let it die; and that that is to be cut off, let it be cut off; and let the rest eat every one the flesh of another.
10 And I took my staff, even Beauty, and cut it asunder, that I might break my covenant which I had made with all the people.
11 And it was broken in that day: and so the poor of the flock that waited upon me knew that it was the word of the LORD.
Zechariah 11:15-17 KJV
15 And the LORD said unto me, Take unto thee yet the instruments of a foolish shepherd.
16 For, lo, I will raise up a shepherd in the land, which shall not visit those that be cut off, neither shall seek the young one, nor heal that that is broken, nor feed that that standeth still: but he shall eat the flesh of the fat, and tear their claws in pieces.
17 Woe to the idol shepherd that leaveth the flock!
the sword shall be upon his arm, and upon his right eye: his arm shall be clean dried up, and his right eye shall be utterly darkened.
The eye is the illuminator-lamp of the body: if therefore your eye be single, your whole body shall be full of light. But if your eye be evil, your whole body shall be full of darkness. If therefore the light that is in you be darkness, how great is that darkness! (Mat 6:22-23). Soul for soul, eye for eye, tooth for tooth, hand for hand, foot for foot: cut them off before they choke the Seed of the Word from the soil of your heart, (see Mrk 4:18-19).
There is a mountain of evidence more from where these things have come, the scripture: simply believe that the Torah is indeed spiritual, just as Paul states in Rom 7:14, and be mindful of this way of thinking offered here in this post as you prayerfully study the scripture.