In Philippians 3:13-14, Paul encourages believers to let go of the past and focus on the future that God has in store. He emphasizes the importance of forgetting what lies behind and straining toward what is ahead, pressing on toward the goal for the prize of the upward call of God in Christ Jesus. This passage calls us to release our burdens, regrets, and past failures, allowing us to embrace the potential of our present and future.