Reading from the Book of Hebrews 4:3
Hebrews 4:3 For
we which have believed do enter into rest, as he said, As I have sworn
in my wrath, if they shall enter into my rest: although the works were
finished from the foundation of the world.
Those that believe God enter into His rest. Experiencing His rest is one way you can tell whether you are really 'in' faith, or whether you are just trying to 'have' faith. When you truly enter into the realm of faith, you enter into the rest of God.
Rest is freedom from excessive reasoning, struggle, fear, inner turmoil, worry and frustration, which develop beacuse of our working to do what only God can do. Being in God's rest is not neccessarily resting from physical activity, but resting in confidance in the midst of everything that goes on in life. It is a rest of the soul where the mind, will and emotions are at peace.
You can rest in God because you know He will take care of you and meet your needs. You do not know when or how and you really do not care because you are enjoying the life you have right now while God works on your problem. If you are worn out, I urge you to enter into His rest.