In the spiritual life one never rests on one’s laurels. It is a sure recipe for falling. Attainments are like the manna given to the Israelites in the desert, good only for the day (Exodus 16:4,20). Past attainments do not place us in a position of merit that permits us to let up in the hot pursuit of God for today, for now. Paul knew that, and he knew that others missed it or forgot it to their great harm.