en_tn/php/03/14.md

I press on toward the goal with a view to the prize of the upward call of God in Christ Jesus

Paul speaks of the way he does all he can to serve Christ and live in obedience to him as if he were a racer running as fast as he can to win a race. Alternate translation: "I do all I can to be like Christ, like a runner racing to the finish line, so that I may belong to him, and God may call me to himself after I die" (See: rc://en/ta/man/jit/figs-metaphor)

the upward call

Possible meanings are that Paul speaks of living eternally with God as if God were to call Paul to ascend 1) to heaven as Jesus did or 2) the steps to the podium where winners of races received prizes, as a metaphor for meeting God face to face and receiving eternal life. (See: rc://en/ta/man/jit/figs-metaphor)