The theme of greatest importance is the third angel's message, embracing the messages of the first and second angels. All should understand the truths contained in these messages; for they are essential to salvation. We shall have to study earnestly in order to understand these truths; and our power to learn and comprehend will be taxed to the utmost. Letter 97, 1902, p. 2. (To Elder E. J. Waggoner, July 7, 1902.) 1MR 57.1