It Matters Not What Else We Have Been Called To Do

"It matters not what else we have been called to do, or what position we may occupy, or how faithfully in other ways we have labored in the Church, none is exempt from this great obligation. It is required of the apostle as well as the humblest elder…The greatest and grandest duty of all is to labor for the dead."
Doctrines of Salvation 2:148-49 Joseph Fielding Smith