The historical fallacy would be saying that early Christians were reprehensible because of their views independent of the time they existed in. I never said that. What I am saying is that following the teachings of those people 2000 years later is what's foolish, as we've come quite a long way in moral development since then.

In the case of Abraham Lincoln, he deserves credit for being progressive for his time in his pursuit of abolition. Does that mean we should follow his views on the inequality of white and black people, because he was progressive then? No, we've come a long way since then.

I think we're more on the same page than not.

For Lincoln, celebrate his accomplishments and how he helped us progress. For the difficult things, understand they are artifacts of his time. They are important to understanding him and can further help color who he was.

Reasonable Christians do the same with the Bible.

Lincoln was a person. The Bible is meant to be the actual teachings of divinity. That's a key difference.

If we're meant to update for modern morality maybe we need a Newer Testament. Until then, the ambiguity of the words of long dead shepherds leave quite a lot to be misinterpreted, as well-intentioned your interpretation may be.

However, people don't go around claiming that Lincoln was God's chosen one and that his word is sacred. That's why we're fine in understanding that Lincoln was a man of his time and many things he said should nowadays be considered garbage. This is not how religion sees the Bible and the words of Jesus and other prophets.