With the promises comes an assurance that while we are resting, that tomorrow morning  we'll  be able to rise up again. The purpose is to be able to stay  focused on remaining positive. It's  the will  to be able  to keep our sneaky eyes out of wanting what we know we don't need. It is by keeping our nosey smells from breathing out the smoke of envy. It is about being protective of what you do have and by giving up on becoming the bearer of stingy  fingers of unforgiveness to anyone else's needs.

And,

Then if we remain still,  we can  lay down this night without the quilt of knowing we should  not  be awaken... 

It will be our wake up call when we are given another chance by  grace to say "Thanks!" .