John Piper got this exactly right and although it was written especially to address a mother grieving the loss of a stillborn child, he addresses issues true for anyone who grieves the loss of a loved one. Blessed are those who mourn, for they will be comforted.

http://www.desiringgod.org/articles/letter-to-a-parent-grieving-the-loss-of-a-child

(Facebook Post 9/8/15)