Actually, the Law of Moses (see Exodus 22:1-9), said five times was the limit of such a penalty payment. So seven times probably represents more of a symbolic number — suggesting the thief will pay “in full.”
STILL, the good news is that we don’t have to be thieves or adulterers — we can change! As the Apostle Paul once wrote, “And such were some of you!” (1 Corinthians 6:11). God CAN help us!