Complex sentence: Since this prophecy was proclaimed, many Latter Day Saints have asserted-to be-or to have otherwise identified the One Mighty and Strong, and some schismatic Latter Day Saint sects have arisen as a result of these claims.
Split into simpler sentences: Since this prophecy was proclaimed, many Latter Day Saints have claimed to be, or to have otherwise identified, the One Mighty and Strong. Some schismatic Latter Day Saint sects have arisen as a result of these claims.