Philippians 3:13-14:
Brethren, I count not myself to have apprehended: but this one thing I do, forgetting those things which are behind, and reaching forth unto those things which are before, 14. I press toward the mark for the prize of the high calling of God in Christ Jesus. What does Paul mean when he says he is “forgetting those things which are behind” (Philippians 3:13) ANSWER https://www.gotquestions.org/forgetting-those-things-which-are-behind.html
The apostle Paul challenged himself and all Christians to keep moving forward in the Christian walk of faith: “Brethren, I do not count myself to have apprehended; but one thing I do, forgetting those things which are behind and reaching forward to those things which are ahead, I press toward the goal for the prize of the upward call of God in Christ Jesus” (Philippians 3:13–14, NKJV).
When Paul said he was “forgetting those things which are behind,” he referred to not looking back at past relationships, memories, failures, temptations, or anything that might distract from a single-minded focus on “the upward call of God in Christ.” To inspire his audience, Paul drew on the image of an athlete running a race with uncompromising determination to reach the finish line and win the prize. The New Living Translation renders the passage like this: “I focus on this one thing: Forgetting the past and looking forward to what lies ahead, I press on to reach the end of the race and receive the heavenly prize for which God, through Christ Jesus, is calling us.”
The word forgetting in Philippians 3:13 means “dismissing from the mind or paying no attention to.” To “forget” in this way is to stop dwelling on something. To win the race, a runner must dismiss every distraction from his mind. He must not rehash every early misstep or dwell on the mistakes along his course.
“Forgetting what is behind” is Paul’s way of saying, “Don’t look back! Stop dwelling on the past. Don’t let anything behind you interfere with your present progress or future efforts.” Personal growth as a believer was a constant priority in Paul’s life. He strained with every fiber of his being to keep moving forward to win the prize for which God had called him.