Luke 14:34-35

Salt is good, but if salt itself loses its strength, how can that strength be restored?

Romans 3:12

They all have turned aside, all have become corrupt; No one does good, not even one!

Treasury of Scripture Knowledge

Summary

Then I went to Euphrates, and digged, and took the girdle from the place where I had hid it: and, behold, the girdle was marred, it was profitable for nothing.

Bible References

It was

Luke 14:34
Salt is good, but if salt itself loses its strength, how can that strength be restored?
Romans 3:12
They all have turned aside, all have become corrupt; No one does good, not even one!
Philemon 1:11
Once he proved to be useless, but now he is useful to you and me;