What beliefs would we consider reasonable for a self proclaimed Christian to hold?

[vulcanlogician]

This is true:

Scientist don't know how life began.. Scientists are looking for the answer to how life began, but they don't know the real reason yet.

This is also true:

Theists don't know how life began. But! Theists are not looking for the answer to how life began. And they will never know the real answer, even if scientists eventually work out what it was and share their findings with the public.

Scientists don't know and admit they don't know.

Theists don't know but think they do.

One of these groups is claiming knowledge they don't have, and it ain't scientists.

Thank you for your honest answer. I would only disagree with two sentences "And they will never know the real answer" Eternity is a long time. That is why I do not believe the never part. The other one is "Theists are not looking for the answer to how life began" Many scientists are theists. Theists also want proof. Neither atheists or theists have that proof.

Yeah, but eternity is not long enough to find the truth when you aren't looking for it. If you have decided that God created life and will not budge on that opinion, you will never learn the true answer if you are wrong. But if you admit that you don't know, and you continue your search for an answer, then and only then does it become possible for you to find one.

Of course many theists are scientists by profession. But they do not assume theism in their work, else they are crappy scientists. Theist or not, a scientist looks for proof. That's what scientists do. If one already holds a view because he or she has accepted a religious doctrine, then the search for proof stops there. The issue is more nuanced than this, because theists can be scientists by profession and put their theistic assumptions on hold while they conduct their work, but if they didn't do this, they wouldn't really be doing science.