Luke 14:34-35

Salt is good; but if the salt has lost its taste, how shall it be seasoned?

Romans 3:12

All have turned aside, together they have become worthless; there is no one who 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 the salt has lost its taste, how shall it be seasoned?
Romans 3:12
All have turned aside, together they have become worthless; there is no one who does good, not even one."
Philemon 1:11
Formerly he was useless to you, but now he is useful both to you and to me.