It's not clear at all.
Matthew 5:38-42 KJV, copied
38Ye have heard that it hath been said, An eye for an eye, and a tooth for a tooth:
39But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also.
40And if any man will sue thee at the law, and take away thy coat, let him have
thy cloke also.
41And whosoever shall compel thee to go a mile, go with him twain.
42Give to him that asketh thee, and from him that would borrow of thee turn not thou away.
but wait, there's multiple instances in the Old Testament referencing eye for an eye, tooth for a tooth. So no, not everything in the OT should be adhered to.
edit: triple teamed lol