Colossians 4:6

Let your speech be always with grace, seasoned with discretion to know how ye ought to answer every one.

Luke 14:34

Salt is good; but if the salt have lost it's savor, wherewith shall it be seasoned?

Hebrews 6:4-5

who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the holy Spirit,

Treasury of Scripture Knowledge

Summary

Can that which is unsavoury be eaten without salt? or is there any taste in the white of an egg?

Taste

Bible References

That which

Luke 14:34
Salt is good; but if the salt have lost it's savor, wherewith shall it be seasoned?
Colossians 4:6
Let your speech be always with grace, seasoned with discretion to know how ye ought to answer every one.

Taste

Hebrews 6:4
who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the holy Spirit,