In the sermon titled 'Clip: Subtle Apostates' by David Green, the speaker warns about the insidious nature of false teachers who infiltrate churches unnoticed. He emphasizes that these apostates do not overtly declare their intentions but instead operate in a stealthy manner, lacking visible identifiers such as signs or business cards labeling them as heretics. Their goal is to subtly spread heresy and distort the gospel of Jesus Christ, gaining followers who may be led astray. The sermon highlights the importance of vigilance and awareness in recognizing and combating such deceptive influences within the church community.

Certain persons crept in unnoticed. They slipped in. We've got to get a grip on how devilish false teachers operate. The apostate does not come to church driving a van that says on the side of it, heretic, call this number and I'll preach for you. He doesn't show up with a t-shirt that says apostate.

He doesn't have a business card. It says let me in your church and I'll destroy it. Doesn't work that way. If he did, that would be great. But that's not how he operates.

He doesn't show up and say, hey, can I come in? I'd like to speak to the pastor. Mr. Pastor, if you'll give me 30 minutes, I'll preach heresy, destroying the gospel of Jesus Christ, and you'll absolutely hate it, but some of your people will love it, and some of them will follow me into the depths of hell. He doesn't, it's not the way that it works.