When the believer is smarting under the rod let him not say, God is now punishing me for my sins. That can never be. That is most dishonoring to the blood of Christ. God is correcting thee in love, not smiting in wrath. Nor should the Christian regard the chastening of the Lord as a sort of necessary evil to which he must bow as submissively as possible. No, it proceeds from God’s goodness and faithfulness, and is one of the greatest blessings for which we have to thank Him. Chastisement evidences our Divine son-ship: the father of a family does not concern himself with those on the outside: but those within he guides and disciplines to make them conform to his will. Chastisement is designed for our good, to promote our highest interests. Look beyond the rod to the All-wise hand that wields it!
A.W. Pink