1) Supposedly, a person must accept Christ or they go to hell. It seems very unfair that a god would send the great majority of the humans to hell for not accepting Christ when most have never heard of Christ because they lived before his time or lived in areas of the world in which Christ was never preached. And then there are the many people who may have heard of Christ, but did not accept him because they were too indoctrinated into their own religion to give the message of Christ a fair chance. (At least Mormonism had a response to this through the teaching in spirit prison, but Christians believe one must accept Christ in this life).
The well-known apologist William Lane Craig argues that every person ever to live has had an undeniable witness from the holy ghost of the truth of Christianity. One must actively deny that verdical experience to reject Christianity.
To quote him on this point,
Suppose someone had been told to believe in God because of an invalid argument. Could he stand before God on judgment day and say," God, those Christians only gave me lousy arguments for believing in you. That is why I didn't believe"? Of course not! The Bible says all men are without excuse. Even those who are given no good reason to believe and many persuasive reasons to disbelieve have no excuse, because the ultimate reason they do not believe is that they have deliberately rejected God's Holy Spirit
So there you go.
I only mention it because it makes me chuckle.