Doctrine and Covenants — Revelation through Joseph Smith…
“ Amen.23 And again, thus saith the Lord unto you, O ye elders of my church, who have given your names that you might know his will concerning you24 Behold, I say unto you, that it is the duty of the church to assist in supporting the families of those, and also to support the families of those who are called and must needs be sent unto the world to proclaim the gospel unto the world. ”
