be ready to give an answer to every one who asks the reason of his hope. You should know what caused the fall of Adam, so that you may not commit the same error, and lose heaven as he lost paradise. You should study the lives of patriarchs and prophets, and the history of God’s dealing with men in the past; for these things were “written for our admonition, upon whom the ends of the world are come.” We should study the divine precepts, and seek to comprehend their depth. We should meditate upon them