There’s more than one easy answer!
Jesus says: “Therefore, whatever you want men to do to you, do also to them, for this is the Law and the Prophets.” in Matthew 7:12
“Then Peter came to Him and said, ‘Lord, how often shall my brother sin against me, and I forgive him? Up to seven times?’ Jesus said to him, ‘I do not say to you, up to seven times, but up to seventy times seven.’ ” Matthew 18:21-22
“People do not despise a thief if he steals to satisfy himself when he is starving. Yet when he is found, he must restore sevenfold; he may have to give up all the substance of his house.” Proverbs 6:30-31
Exodus 22:4, “If the theft is certainly found alive in his hand, whether it is an ox or donkey or sheep, he shall restore double.”