Invariably we have new theists that join the forum only to start threads on issues that have played out so many times it isn't even funny.
I really don't know what to do about this but it is a situational fact.

1) Morality being "objective"

2) The bible being the proof of itself.

3) 500 witnesses of the resurrection.

4) When the new testament was really written.

5) The bible being the only proof that jesus existed.

6) Islam is commanded by the Quran to kill christians.

7) Donald Trump is a good guy no matter what he says or does.

8) Mark, Matthew, Luke, and John, really wrote the gospels.

9) The Earth is flat and only 6000 years old.

10) Evolution, Global Warming, are not real or proved.

11) Abortion shouldn't be up to the woman.

12) There is no racism in 'merica.

13) There is a war on christmas.

14) NDEs are real.

15) There is an American culture and everyone should conform to it.

16) The founding fathers were all born again christians.

17) Atheism is a belief.

18) I can't prove a god, can you prove there isn't one?

Etc...and so forth!

All of these issues have been beat to death several times and clearly, christians have been on the shitty end of the stick. Let's be reasonable, they are defending the indefensible.
So for you new members especially you christians he is the results of those discussions. Take notes and get up to speed!
1) Morality is subjective and created by society!
2) The bible cannot and is not proof of its self!
3) There were no witnesses to the resurrection...none!
4) The new testament was written in 325 AED at the Council of Nicea, not before.
5) There are no first-hand accounts of jesus other than the bible...none!
6) The Quran doesn't command muslims to kill christians!
7) Donald Trump is a self-entitled narcissistic moron, a racist chauvinist deviant!
8) Scribes commission by Emporer Constantine wrote the gospels.
9) The Earth is roughly spherical and about 4.54 billion years old.
10) Evolution is a proven fact and Global Warming is real.
11) Abortion should be up to the woman and no one else.
12) Racism is rampant in 'Merica!
13) There is no war on christmas but there is a war on education waged by the christians!
14) NDEs are not REAL quit watching YouTube videos!
15) America enjoys many cultures and there is NO specific culture to conform to, to include a national language.
16) Most of the Founding Fathers were Deist which at the time was code for ATHEIST!
17) Atheism is not, has never been, and never will be a religion or a belief!
18) The burden of proof lies solely with the believer.

There are plenty more but this should get you folks started in the right direction. Remember, the only thing you can bring to the table that will actually interest atheists is valid proof of your god.