Endure hardship as discipline; God is treating you as sons. (Hebrews 12:7 NIV)
The Lord may get you off activities and shut you up to inactivity, and you go through an awful time and say the Lord has forsaken you, all has gone wrong. What really is it? Why, it is growing pains! Has it not proved to be growing pains? In the long run it was not all wrong, it was all right. You came to know the Lord whereas before your whole life was taken up with things. You have been shut up and you came to know the Lord inwardly and you have come to a state of spiritual efficiency which is so much greater that you can now meet the external situation. He has been misunderstood, but He was working unto your efficiency, exercising us unto efficiency. These, the growing pains, are terrible. You cannot help anyone who is suffering from growing pains, and you must stand aside and see them going through.
So through numerous and various directions this growth takes place by the painful exercise produced by the way the Lord is dealing with you. Chastening – a poor English word. It is child-training or discipline. Take the word disciple; one who comes into association with someone in order to learn, and the Disciples were chosen that they might be with Him in order to learn. That is discipline, learning. We do learn through suffering. Even the Lord Jesus was made "full grown" in this sense, complete, through suffering. We take the same way unto full growth. It is child training, discipline, learning by way of experience. That is chastening. Making us sons out of children, full grown men out of infants. I feel that we want to have more faith in the dealings of God with us along this line.
By T. Austin-Sparks