The word faith is described in the bible.
“Faith is the assured expectation of things hoped for, the evident demonstration of realities though not beheld.”—Hebrews 11:1.
So how does an atheist have faith that God doesnt exist?
Is he hoping for that?
What is the evident demonstration of realities that show that, even tho they arent beheld?
An atheist would look a lot better if he just said, 'yes i know a TRUE God exists.Im just NOT interested in him or his commands.'
He might even get judged more favorably by God if God saw in his heart his ignorance overwhelmed his thinking.