What about this one: The Bible is the Word of God, right? Its authors were inspired by God. Of course they knew this, that they were inspired by God, or how else could they write of things happening in heaven, thousands of years ago, decades old coversations verbatim, etc.
Okay. Then explain this:
1 Corinthians 7:10- "To the married people I give instructions, yet not I but the Lord, that a wife should not depart from her husband."
1 Corinthians 7:12- "But to the others I say, yes, I not the Lord: If any brother has an unbelieveing wife, and yet she is agreeable to dwelling with him, let him not leave her."
So, is 1 Corinthians the word of God, or not? 'Cause Paul kinda says he doesn't think it is, and he wrote the damn thing.
Then there's the matter of appropriate language in the Bible.
Galatians 5:12- "I wish the men who are trying to overturn you would even get themselves emascualted."
Oh yeah, that's appropriate. Imagine an elder giving a talk said such a thing!