Luke 14:34-35

Therefore salt is good: but if the salt may lose its savor, with what shall it be salted?

Romans 3:12

all have gone away, they have all together become unprofitable; there is no one who is doing good, there is not 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
Therefore salt is good: but if the salt may lose its savor, with what shall it be salted?
Romans 3:12
all have gone away, they have all together become unprofitable; there is no one who is doing good, there is not one.
Philemon 1:11
him at one time unprofitable to you, but now profitable both to you and to me: whom I have sent back to you,