“Is it OK when people call Church leaders by just their last names?” New Era, March 2018
We should use Church leaders’ titles as a basic sign of respect for them and their callings—as well as for the Lord, who gives them their authority. Though you may feel familiar with them because you love their messages, using their titles shows the Lord how you feel about His priesthood.
President Russell M. Nelson has taught: “Priesthood titles are not created by man; neither are they for adornment, nor do they express mastership. They denote appointment to service in the work of the Lord. … Titles pertaining to the holy priesthood deserve our utmost care and respect. Each member of the First Presidency is addressed and spoken of as ‘President.’ (See D&C 107:22, 24, 29.) … The preferred title for one of the Twelve is ‘Elder’ or ‘Brother’” (Apr. 1993 general conference).
Of course, this also applies to women who serve. We should call them “Sister.” As President Dallin H. Oaks, First Counselor in the First Presidency, has taught, “Whoever functions in an office or calling received from one who holds priesthood keys exercises priesthood authority in performing her or his assigned duties” (Apr. 2014 general conference).