Based on God’s “foreknowledge” (Rom. 8:29), Jesus came to earth to bring peace and reconciliation between Creator God and those of His choosing. The inevitable result of that work is all out war with hypocrisy and false teaching.
“Do not think that I came to bring peace on earth. I did not come to bring peace but a sword.” Matt. 10:34.
Jesus is talking about the absolute division between a loyalty to good or a loyalty to evil. Jesus creates a division that’s as cleanly separated as if it had been cut in two with a sword. This separation occurs between those who are genuine followers of Jesus and those who pretend to be His followers while rejecting His Lordship in their lives. See http://thesauros-store.blogspot.com/2010/04/loftus-ehrman-and-tares.html
“Lord, did we not prophecy in your name, and heal people and cast out demons in your name? And Jesus will say to them, “Get away from Me, for I never knew you.”
No middle ground.
No, “Let’s talk about this so I can hear your point of view.”
Just, “Get away from Me.”
Now, some will see this as hate on Jesus’ part. They’re partly right.
Jesus hates hypocrisy and false worship because it destroys our relationship with God.
Jesus hates it when we put our allegiance to other things besides Him because that makes reconciliation with our Creator impossible.
Jesus warns us to get rid of anything that might come between us and a healed, forgiven relationship with God.
He is brutal in His honesty. Jesus came to earth on a rescue mission. It cost Him His life.
Leaving us in our sin is simply not an option.
According to Jesus, that which is killing us, must itself be destroyed.
The Prince of Peace will bring destruction to that which destroys peace between us and our Creator.