As Christians, we must remember that Christ came to fulfill the law, not abolish it.
Matthew 5:19 "Anyone who breaks one of the least of these commandments and teaches others to do the same will be called least in the kingdom of heaven, but whoever practices and teaches these commands will be called great in the kingdom of heaven."
Does this mean just the commandments we like?? No, no and no!
A childless widow must not marry anybody outside of her husband's family. (Deuteronomy 25:5)
A man must not divorce a woman he married after having raped her. (Deuteronomy 22:29)
A man must not allow himself to be castrated. (Deuteronomy 23:1) -- the Catholics are right here.
Do not permit a witch to live. (Exodus 22:18)