15. Mosaic Law To understand the purpose of God in giving his Law through Moses, the following important facts must be considered: (a) This Law was not meant for all nations in all ages of the world but for the people of Israel alone, and only for the period of waiting for the Messiah. (b) It was not meant to instruct men how to earn salvation through their works, as it was sadly misinterpreted by the Jews in later days, but it was based upon the promises given to the fathers (Galatians 3:16–18)