The simple truth is, we must ask this question and think carefully about it: What aspects or parts of OT law carry over into the NT, and which do not? Those of differing theological persuasions will answer this question differently. Theonomists, or Christian reconstructionists, for example will see almost all of the law carrying through, including the civil laws and their penalties, while other Christians will claim that only the moral law does.
Is Jesus at odds with Moses here?
In my previous article on this topic I noted how the Old Testament expresses the concept of lex talionis, or the principle of retaliation and retribution. I noted the three main passages on this, and sought to provide a larger framework by which we might understand these texts.
A major point I sought to make was that this principle was actually an improvement on that of many other ancient cultures in that it strictly limited personal revenge and sought to put crime and punishment in the context of a just social and political order. As we put it today: ‘the penalty should fit the crime.’ That is how we are to understand this biblical principle.
The Relationship Between the Old Testament Law and the New Testament
The topic of this subheading has been extensively discussed and debated over the centuries, and entire libraries exist with books on this and related matters, so I can only give the briefest of outlines here. For one short and general look at these issues, see this piece: billmuehlenberg.com/2018/10/08/the-law-and-the-christian/
The simple truth is, we must ask this question and think carefully about it: What aspects or parts of OT law carry over into the NT, and which do not? Those of differing theological persuasions will answer this question differently. Theonomists, or Christian reconstructionists, for example will see almost all of the law carrying through, including the civil laws and their penalties, while other Christians will claim that only the moral law does. And not every believer is even happy with that threefold division of the law (moral, civil and ceremonial).
Again, whole libraries have been penned on such matters. As but one helpful discussion of how OT law fit in to the NT, see the discussion by Roy Gane in his 2004 NIVAC commentary on Leviticus and Numbers, pp. 305-314. Here is just one quote from that work: “Properly viewed within a covenant framework of love and grace, God’s law is not ‘legalistic’ and obedience to it is not ‘legalism’. People are legalistic when they put his law in place of his grace as a means of salvation.”
And Gane wrote an entire book on these issues in 2017: Old Testament Law for Christians. See the details of that book and nearly 40 others I list in the article I linked to just above.
Jesus and Lex Talionis
But the Christian will immediately think of the words of Jesus in the Sermon on the Mount as found in Matthew 5:38-42:
You have heard that it was said, ‘An eye for an eye and a tooth for a tooth.’ But I say to you, Do not resist the one who is evil. But if anyone slaps you on the right cheek, turn to him the other also. And if anyone would sue you and take your tunic, let him have your cloak as well. And if anyone forces you to go one mile, go with him two miles. Give to the one who begs from you, and do not refuse the one who would borrow from you.
The question is, do those words nullify what the OT taught about lex talionis? I think not. A major part of understanding what Jesus was referring to here is to realise he is offering a personal ethic for the individual believer. He is NOT saying there is no place for justice to be administered by the state to punish evildoers.
That is, if I am slapped in the face, I can turn the other cheek as a Christian.