David is an atheist because he knows that the existence of god cannot be proven.
Your question is an example, albeit flawed, of a sentence containing the word "atheist."
the atheist later became a scientist :)
"Because John does not believe in gods, he considers himself an atheist."
I am an atheist.An atheist is someone who doesn't believe in religion.It is everyone's right to choose their own religion and not be abused for it, including those who are atheist.
The priest renounced his faith and became an atheist.
This is not a question and it is barely a sentence.
I put the word wool in a ten word sentence.
see How do you put the word countries in a sentence?
Many philosophers have defended atheism; the rejection of the belief in gods.Atheism is the disbelief in gods.
The word is put in a sentence like I just did right now.
you have just put it in a sentence....
yes you can put in a sentence