When we study the religions given by various prophets to different people in this world, in different periods of the world's history, we shall find that the truth which is behind all the religions is the same; if the teaching differs it differs only in the law they have given. People have always disputed in vain over this difference in the laws that the different teachers have given to their people, not realizing how much that law depended on the people who received it and on the time when it was given.