"God, being a perfect God, had to give a perfect Law, and the Law was given not to save men, but to measure them. I want you to understand this clearly, because I believe hundreds and thousands stumble at this point. They try to save themselves by trying to keep the Law; but it was never meant for men to save themselves by.
Ask Paul why (the Law) was given. Here is his answer, 'That every mouth may be stopped, and all the world may become guilty before God' (Romans 3:19). The Law stops every man's mouth. I can always tell a man who is near the kingdom of God; his mouth is stopped. This, then, is why God gives us the Law- to show us ourselves in our true colours."