Separation in the final hours

Matthew 15:14

"Let them alone: they be blind leaders of the blind. And if the blind lead the blind, both shall fall into the ditch"

Here Jesus is talking about the Pharisees. The Pharisees were false teachers who twisted God's word to support their own man made traditions.

Jesus said this after the disciples told Him that the Pharisees got offended that He (Jesus) called them out on breaking God's commandments in order to support their man made doctrines. In other words, Jesus told the disciples not to bother with them or try to convince them of the truth. He even indicates to also leave alone those who follow them. He said both the blind guides (Pharisees) and those who listen to them will fall into a ditch. This ditch will be the Lake of fire at the last day.

Jesus did not try to convince people more than once as He knew that if these people were not planted by His heavenly Father they would be uprooted anyways. He felt it useless to try and convince them of His Father's word. Jesus gives us sound advice elsewhere regarding this principle:

Matthew 7:6

"Give not that which is holy unto the dogs, neither cast ye your pearls before swine, lest they trample them under their feet, and turn again and rend you."

We should not try to keep reaching those who outright reject the gospel and especially if they are hostile to it. Jesus describes them as dogs and swine. He says it is a waste of time to try and give them God's pearls of wisdom which is the gospel of the Kingdom. Because they are reprobate all they will do is trample them underfoot like pigs and then come and tear you to pieces.

This is why it is folly to debate and argue with Atheists who the bible calls fools. When believers in Christ try to give them the gospel they mock and scorn and deride us and what we believe. They are a perfect example of what Jesus is describing above.

1 John 4:5-6

5 They are of the world: therefore speak they of the world, and the world heareth them.6 We are of God: he that knoweth God heareth us; he that is not of God heareth not us. Hereby know we the spirit of truth, and the spirit of error.

In context, John is talking about the false prophets who have the spirit of antichrist and go out into the world to deceive people. Notice that John says the world hears these false prophets who deny the Sonship of Christ. Why do they hear these false prophets? Because both of them are of the world having the spirit of antichrist.

We should not wonder when the world rejects the message of the gospel yet embraces the message of the false prophets as the spirit of antichrist is in them. The world hears and loves it's own. 

The false prophets speak of worldly principles and idealogies therefore the world listens to them because they also believe in those idealogies. However, those who know Jehovah God hear those who preach the apostles doctrine. Many who outright reject the gospel have already been given over to a strong delusion by God and believe a lie. We need to be intune with the holy Spirit and discern when someone who is a swine so that we don't waste our time in giving them pearls lest they turn and tear us to pieces.

2 Thessalonians 2:10-12

10 And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved.11 And for this cause God shall send them strong delusion, that they should believe a lie:12 That they all might be damned who believed not the truth, but had pleasure in unrighteousness.

There is a point where God gives someone over to their sin and a lie. This is the strong delusion. This starts with the persons rejection of the truth which is God's word. This is why it is fruitless to debate and argue with people as they may have already been given over to the strong delusion. As the time approaches the second advent of Christ this will become more pronounced and it is God's way of separating the sheep from the goats. We must use our God given discernment and recognize when this is the case and not go against God's will of separation.