If you cannot see Christ with you in the furnace, you can be quite sure He is there.
What though I were in the deep three days and three nights, if I have Christ with me there! Whatever the place I am brought into, I shall find sweetness if He is with me.
O, do not let Christ have the second place! It is to be nothing else than Christ and you; and you and Christ, all the way through the wilderness. Let Him always be the only object before your mind. Having Him, you will find strength for everything.