Neil L. Anderson quotes "I do not know the meaning of all things" from 1 Nephi 11:17 when addressing the question of why only men administer the ordinances of the Priesthood.
Neil L. Anderson, "Power in the Priesthood,"General Conference, October 2013, accessed June 27, 2023
What We Know about the Priesthood
Some may sincerely ask the question, “If the power and blessings of the priesthood are available to all, why are the ordinances of the priesthood administered by men?”
When an angel asked Nephi, “Knowest thou the condescension of God?” Nephi answered honestly, “I know that he loveth his children; nevertheless, I do not know the meaning of all things.”
When we speak of the priesthood, there are many things we do know.