'Insipid' in the Bible

Eaten is an insipid thing without salt? Is there sense in the drivel of dreams?

Thy prophets have seen for thee a false and insipid thing, And have not revealed concerning thine iniquity, To turn back thy captivity, And they see for thee false burdens and causes of expulsion.

Ye are the salt of the earth; but if the salt have become insipid, wherewith shall it be salted? It is no longer fit for anything but to be cast out and to be trodden under foot by men.

“Therefore, salt is good; but if salt has become tasteless, with what will it be seasoned?