David Wood was a very good friend of Nabeel Qureshi. David's story of God's grace extended to him is worth listening to.
As for an Atheist, the Psalms say: "A fool says in his heart, 'There is no God.'"
The Proverbs have much to say about talking with fools.
I think David Wood is right on with his remarks.
Proverbs 26:4-12
[4]Don’t answer the foolish arguments of fools, *** or you will become as foolish as they are.
[5]Be sure to answer the foolish arguments of fools, *** or they will become wise in their own estimation.
[6]Trusting a fool to convey a message *** is like cutting off one’s feet or drinking poison!
[7]A proverb in the mouth of a fool *** is as useless as a paralyzed leg.
[8]Honoring a fool *** is as foolish as tying a stone to a slingshot.
[9]A proverb in the mouth of a fool *** is like a thorny branch brandished by a drunk.
[10]An employer who hires a fool or a bystander *** is like an archer who shoots at random.
[11]As a dog returns to its vomit, *** so a fool repeats his foolishness.
[12]There is more hope for fools *** than for people who think they are wise.