For our commonwealth has its existence in the heavens, from which also we await the Lord Jesus Christ as Saviour
— Philippians 3:20 Darby
This heavenly commonwealth is the upward call Paul spoke of: “I press on toward the goal for the prize of the upward call of God in Christ Jesus” (Phil. 3:14). We press on toward Christ because we are called into this commonwealth. As we pay the price to pursue Him, we experience and gain Christ as the reality of this commonwealth.
Excerpted from Philippians: That I May Gain Christ by Titus Chu, p. 247