They go from strength to strength, every one of them in Zion appeareth before God (Psalm 84:7).
The Christian life should never be a stagnant life, satisfied with the spiritual status quo. It should be a life of continued growth and progress, day by day. The believer has an infinite supply of resources available and thus is expected to continue to increase in spiritual strength and grace and glory all his life.
First, blessed is the man whose strength is in thee. With such strength the believer can, when passing through the valley of Baca [weeping] make it a well (Psalm 84:5,6). Next, as seen in our text, They go from strength to strengththat is, from one level of strength to another, as they appropriate the strength of the Lord Himself.
But strength is more than just spiritual power. Be strong in the grace that is in Christ Jesus (II Timothy 2:1). We are saved by grace, and Gods grace should be increasingly evident in our lives. Of His fullness have all we received, and grace for grace (John 1:16). His grace is endless and inexhaustible, and we can receive (literally) grace upon grace, as we grow in grace, and in the knowledge of our Lord and Savior Jesus Christ (II Peter 3:18).
Then, as we go from strength to strength, and receive grace upon grace, we all, with open face beholding as in a glass the glory of the Lord, are changed into the same image from glory to glory (II Corinthians 3:18). The glass in which we behold the Lords image, in context, is the reading of the Scriptures. His glory shines through its open pages and becomes reflected in the very character of the believer.
This is how the Christians spiritual life should progress from day to day. Receiving first of all His strength and His grace, and His glory, we may grow up into Him in all things, which is the head, even Christ (Ephesians 4:15). HMM