"Weak = Lower, Strong = Higher" Joseph Smith is not as educated or eloquent as many of the Elders around him. The Lord chooses Joseph and "weak things" over the sophistication of man. He has us pass through the Lower Law first, then the Higher Law. In this episode of Come Follow Me LDS, The Cwic Interpreter of The Higher and Lower Laws is used in these sections as well as the Royal Procession.
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Come Follow Me LDS Doctrine and Covenants 67-80