In Matthew 24 Jesus uses a parable to teach about being ready for his return:

“Therefore you also be ready, for the Son of Man is coming at an hour you do not expect. Who then is a faithful and wise servant, whom his master made ruler over his household, to give them food in due season? Blessed is that servant whom his master, when he comes, will find so doing. Assuredly, I say to you that he will make him ruler over all his goods. But if that evil servant says in his heart, ‘My master is delaying his coming,’ and begins to beat his fellow servants, and to eat and drink with the drunkards, the master of that servant will come on a day when he is not looking for him and at an hour that he is not aware of, and will cut him in two and appoint him his portion with the hypocrites. There shall be weeping and gnashing of teeth” (Matthew 24:44-51).

Note that Jesus is speaking about servants here, meaning believers. One servant is called faithful and the other evil. What makes the latter evil in God’s eyes? According to Jesus, it’s something he “says in his heart” (24:48). This servant doesn’t voice such a thought and he doesn’t preach it. But he thinks it. He has sold his heart on the demonic lie, “The Lord delays his coming.” Notice he doesn’t say, “The Lord isn’t coming,” but “he delays his coming.” In other words, “Jesus won’t come suddenly or unexpectedly. He won’t return in my generation.”

This “evil servant” is clearly a type of believer, perhaps even one in ministry. He was commanded to “watch” and “be ready” (Matthew 24:44). Yet this man eases his conscience by accepting Satan’s lie.

Jesus shows us the fruit of this kind of thinking. If a servant is convinced that the Lord has delayed his coming, then he sees no need for right living. He isn’t compelled to make peace with his fellow servants. He doesn’t see the need to preserve unity in his home, at work, in church. He could smite his fellow servants, accuse them, hold grudges, destroy their reputations. As Peter says, this servant is driven by his lusts. He wants to live in two worlds, indulging in evil living while believing he’s safe from righteous judgment.