How to recite 495 hymns and hope to be used by the Lord

If I were still running around the world today, the Chamber of Secrets and people would pray for me.

If I only care about my own comfort, who will look for the lost sheep?

The threshing floor is so vast that there is a cry of need everywhere.

I really heard and saw it. How can I say I don't know?

Lord! I am willing to be used by you, and I will try my best.

Although it's time to be old and white-haired, Lord, I beg you to let me run.