1 Timothy 4:7‑8
Exercise yourself  .  .  .  unto godliness. For bodily exercise profits a little, but godliness is profitable for all things.
There is a tremendous emphasis today on physical exercise, getting in shape, taking care of our bodies, staying fit. And all of these things do profit for a little time. But the only thing which has eternal benefit is exercising ourselves unto godliness. In other words, daily building ourselves up spiritually - consciously and in an organized way - so that our lives will be lived for the glory of God. Just as your level of performance in sports will be determined by your physical fitness and practice now, so your future enjoyment of Christ and your capacity to appreciate Him will be determined by your spiritual exercise from day to day.