There are some Christians who may be “sleeping on the job.” If so, this message is not to comfort them. The “rest” we are talking about is not the kind that you find a couple of weeks in the summer, in a hammock, or in bed.
Remember that Jesus told the disciples to watch and pray when he found them sleeping in the Garden of Gethsemane.
We know that it is important for our bodies to get a proper night’s rest, and if we don’t, there are unpleasant consequences. But if physical rest is important to our physical well being, spiritual rest is even more important to our spiritual well being.