I just partially rewatched the video I shared in post
#178 and was reminded Jesus explained what he meant by salt in Luke. It was used as a fertiliser in ancient times and being the salt of the earth (soil) means fertilising it.
Luke 14:34-35
34 “Salt is good for seasoning. But if it loses its flavor, how do you make it salty again? 35 Flavorless salt is good neither for the soil nor for the manure pile. It is thrown away. Anyone with ears to hear should listen and understand!”
That's informative, thanks.
In an attempt to understand Mark 9:49, we need to consider the context.
Especially where that verse lands in the passage. Sandwiched between vs 48 and 50 as its own paragraph really.
As I read it, vs 50 is saying, "Speaking of salt..."
Verse 49 seems much more connected to verse 48, "... and the fire is not quenched."
Mark 9:42-50 NIV
“If anyone causes one of these little ones—those who believe in me—to stumble, it would be better for them if a large millstone were hung around their neck and they were thrown into the sea. 43 If your hand causes you to stumble, cut it off. It is better for you to enter life maimed than with two hands to go into hell, where the fire never goes out. [44] [
a] 45 And if your foot causes you to stumble, cut it off. It is better for you to enter life crippled than to have two feet and be thrown into hell. [46] [
b] 47 And if your eye causes you to stumble, pluck it out. It is better for you to enter the kingdom of God with one eye than to have two eyes and be thrown into hell, 48 where
“‘the worms that eat them do not die,
and the fire is not quenched.’[
c]
49 Everyone will be salted with fire.
50 “Salt is good, but if it loses its saltiness, how can you make it salty again? Have salt among yourselves, and be at peace with each other.”