Why is spiritual growth so slow in some and so gloriously quick in others? Because some kick and question, or argue with God; go round and round the point asking, Does it mean this? Must I do this? Is it necessary? Can I, may I do this? and so on. Yet these very people are loudest in
saying they want only the will of God; but their very affirmation often shows a struggle is going on, and their growth is fraught with a good deal of friction.
Others in a beautiful sincerity and purity of spirit are immediately letting go to the Lord, so He is able to lead them on, without waste of time in controversy with the will of God; and there is no weakness through there not being an utter abandonment and whole-hearted obedience and surrender to that will. There is a passion for the Lord Himself, and for Him to have His full way at whatever cost.
It all depends on our appreciation of the Lord Jesus. When we get a true value of Him, and see all that He is for us to the Father, and as by faith we appropriate Him, we quietly grow - "Beholding... the Lord, are changed (transformed from within) into the same image, from glory to glory" (2 Cor. 3:18).
The hindrance to growth is the regarding things as apart from the Person, the Lord Jesus. We would never walk round the Scripture, as we sometimes do, debating whether we would or would not, if we had a full appreciation of Him, if our passion was for Him to get the fullest glory possible; we should instantly yield, that Christ might get more glory.
Is not the difficulty often in our regarding aspects of the Christian life as something in themselves?
An adequate appreciation of the Lord Jesus gets rid of all the strain of spiritual growth. Christ is most glorified where Christ is most in the heart. Growth is bound up with the Beloved One; and growth is the outcome of being occupied with Him, giving the Lord Jesus His place in everything; He the first, and He all, and in all. Conclusively it is a matter of the measure of Christ, we must see that everything is bound up with the Lord Jesus Himself.
[Extracted from 'The Measure of Christ' by T. Austin-Sparks. It is worth reading the entire message on www.austin-sparks.net]