Our light affliction which is but for a moment worketh for us a far more exceeding and eternal weight of glory. Oh what afflictions Paul took pleasure in! What was the secret? "While we look not at the things which are seen but at the things which are not seen." Our connection is with unseen things: a risen Christ in glory filling the eye, the mind continually weighing the things of the Sanctuary above, with the things of time and sense down here, the believer can turn and trample on them, and combat all of the flesh and the devil, that would take the mind off to things seen.
That one thought, asking in everything, "What will be for Christ's glory?" is impossible to us if the question of our salvation be not settled. How can I be thinking what is for Christ's glory if I am pondering as to whether He has perfectly saved me? Job's heart was not happy in God, and all that came upon him tore his heart to pieces. Paul was happy in Him, and let all outward things go on as they might, the inward joy in God was not disturbed; nothing took him by surprise.