Open the door and enter in.
There is rest and comfort within.
The key to the door is faith.  Faith in God.
Truly my soul finds rest in God;
my salvation comes from him.
It is more than a Saturday afternoon at the park.
It is not a quick nap. 
These are only temporary.
God gives a lasting, spiritual, and eternal rest.
Rest which can be accessed every moment of every day.
Then Jesus said, “Come to me, all of you who are weary
and carry heavy burdens,
and I will give you rest.