For every one shall be salted with fire, and every sacrifice shall be salted with salt.
All Commentaries on Mark 9:49 Go To Mark 9
George Leo Haydock
AD 1849
Become unsavoury; i.e. if he, who has once received the faith, should apostatize from it, what is there that can possibly convert him from his wicked ways? since even the salt, with which he was salted, is become unsavoury, i.e. the doctrines he formerly received are no longer of any use. (Nicholas of Lyra)