In a succinct form, this passage contains God's spiritual purpose. He is working toward sharing the riches of His glory with His entire Family. His primary purpose is to prepare His people for living in the inheritance—eternally. To this end, Paul prays that we might utilize our spiritual privileges to the full and be strengthened in the inner man. He asks that "Christ may dwell in our hearts through faith" and that we be "rooted and grounded in love."
God is concerned about the inner man. That is the part in us by which we are able to recognize and grasp spiritual realities. By it, we make the choices that will lead to the fulfillment of God's purpose for us. It is this part of us that walks by faith. God will "exceedingly abundantly" provide for us within the context of His purpose (verse 20), even as He did for Israel in the wilderness. They appeared so vulnerable, weak, and exposed while living in the open in booths, but they had everything they needed. He promises to "provide all [our] need according to His riches in glory by Christ Jesus" (Philippians 4:19).
John W. Ritenbaugh
Preparing for the Feast
Other Forerunner Commentary entries containing Ephesians 3:20:
2 Corinthians :
2 Corinthians 13:5