The old Testament law is most clear in Leviticus 15
"17 r“Whoever takes a human life shall surely be put to death. 18 sWhoever takes an animal's life shall make it good, life for life. 19 If anyone injures his neighbor, tas he has done it shall be done to him, 20 fracture for fracture, eye for eye, tooth for tooth; whatever injury he has given a person shall be given to him. "
Though in Exodus 22 it shows not all punishments are equal
"1“If a man steals an ox or a sheep, and kills it or sells it, he shall repay five oxen for an ox, and cfour sheep for a sheep. 2 2 If a thief is found dbreaking in and is struck so that he dies, there shall be no bloodguilt for him, 3 but if the sun has risen on him, there shall be bloodguilt for him. He3 shall surely pay. If he has nothing, then ehe shall be sold for his theft. 4 If the stolen beast fis found alive in his possession, whether it is an ox or a donkey or a sheep, ghe shall pay double.
5 “If a man causes a field or vineyard to be grazed over, or lets his beast loose and it feeds in another man's field, he shall make restitution from the best in his own field and in his own vineyard."
The context for Christians today is in Mathew 5
"38 h“You have heard that it was said, y‘An eye for an eye and a tooth for a tooth.’ 39 But I say to you, zDo not resist the one who is evil. But aif anyone bslaps you on the right cheek, turn to him the other also. 40 And zif anyone would sue you and take your tunic,8 let him have your cloak as well. 41 And if anyone cforces you to go one mile, go with him two miles. 42 dGive to the one who begs from you, and edo not refuse the one who would borrow from you."