Mark 9:49-50 are very difficult passages to understand! The key word is salt and yet it seems to be used in two to three different ways. To be “salted with fire” – to me get across the idea that God’s people will at some time have to face hardships and trials (the fire in the text). The concept of salt is again used and the warning is not to “lose our saltiness,” which was common because the salt used then was not pure. Most likely this is talking about our godly influence on the world around us. When Jesus said have “salt in yourselves” He seems to be implying that same godly influence needs to be ever present in our lives, the result of God’s influence and presence in our lives will have a direct influence on our relationships. That is what I think – what do you think?