When Lloyd Douglas, author of The Robe & other novels, was a university student, he lived in a boarding house. Downstairs in the first floor was an elderly, retired music teacher, now infirm and unable to leave the apartment.
Douglas said that every morning they had a ritual they would go through together. He would come down the steps, open the old man’s door, and ask "Well, what’s the good news?" The old man would pick up his tuning fork, tap it on the side of his wheelchair and say, "That’s middle C! It was middle C yesterday; it will be middle C tomorrow; it will be middle C a thousand years from now. The tenor upstairs sings flat, the piano across the hall is out of tune, but, my friend, that is middle C!"
The old man had discovered one thing upon which he could depend, one still point in a turning world. For Christians the one absolute of which there is no changing is Jesus.
Source unknown
Applications: change, God's changelessness, security