This week's Mark series sermon dives into a stark warning from Jesus about the seriousness of sin (Mark 9:42-50). Using the illustration of fig wasps, the main point is clear: sin is serious and leads to hell, therefore the church must be the salt of the earth. Jesus emphasizes the severe consequences for leading believers astray, using the metaphor of a millstone and the sea. He then uses shocking imagery – cutting off hands, feet, and plucking out eyes – to illustrate the absolute necessity of dealing with sin that leads to hell, a place of "unquenchable fire." Finally, Jesus calls the church to be the "salt" – preserving and influencing the world for good – urging believers to "have salt in yourselves, and be at peace with one another."