A) Worth noting is the reality that God will judge everyone who has spoken harshly against Him. Those who dismissively speak about God will discover that their words will return to haunt them. There are no atheists in foxholes, and there will be no atheists when someone stands before God, either.

B) Jude concludes this section by clarifying that these individuals are driven by their own desires, and everything they do is solely for their own benefit or gain. They flatter others not because they genuinely mean it but because they seek personal gain from the flattery. While there is nothing wrong with being complimentary, it becomes problematic when it's done with ulterior motives. It's good to speak well of others, but ensure that the intentions behind your words are pure.

C) Speaking good things to one another is absolutely essential. Lifting up is absolutely essential. Speaking well to one another is absolutely essential. But the key is what the motive is behind it. If we're speaking to please the Lord, then right on. But if we are speaking for some nefarious underneath idea, it's a sin.