D&C 124

Adding to my blog yesterday is the great promise -

"...I command you again to build a house to my name, even in this place, that you may prove yourselves unto me that ye are faithful in all things whatsoever I command you, that I may bless you, and crown you with honor, immortality, and eternal life."  (Doctrine and Covenants | Section 124:55)

What takes place in holy temples is what is necessary to be crowned with "honor, immortality, and eternal life". 

We learn another important principle in this revelation -

"Verily, verily, I say unto you, that when I give a commandment to any of the sons of men to do a work unto my name, and those sons of men go with all their might and with all they have to perform that work, and cease not their diligence, and their enemies come upon them and hinder them from performing that work, behold, it behooveth me to require that work no more at the hands of those sons of men, but to accept of their offerings."  (Doctrine and Covenants | Section 124:49)

"And this I make an example unto you, for your consolation concerning all those who have been commanded to do a work and have been hindered by the hands of their enemies, and by oppression, saith the Lord your God."  (Doctrine and Covenants | Section 124:53)

But also -

"And the iniquity and transgression of my holy laws and commandments I will visit upon the heads of those who hindered my work, unto the third and fourth generation, so long as they repent not, and hate me, saith the Lord God."  (Doctrine and Covenants | Section 124:50)

I believe "enemies" or "oppressors" would include that of this world such as sickness and other incapacitating means.