"Faith makes us sure of what we hope for and gives us proof of what we cannot see." (Hebrews 11:1)
While statistics indicate that 7% of the world population today are doubtful or do not believe in the existence of God (irreligion), ironically, the Bible proves that 0% of the devils are either atheists, agnostics, or polytheists:
"You believe that there is one God. Good for you! The devils also believe that, and they tremble with fear." (James 2:19)
Statistics show that 31% of the world population may have confessed that Jesus is Son of God, the Bible in fact proves that 100% of the devils do so:
"They shouted, 'Jesus, Son of God, what do you want with us? Have you come to punish us before our time?'" (Matthew 8:29)
"Jesus from Nazareth, what do you want with us? Have you come to destroy us? I know who you are! You are God's Holy One." (Mark 1:24)
Some Christians may pray to God the Father. In fact, all of the devils continually do so:
"Jesus said, 'Simon, listen to Me. Satan has asked to sift you like wheat.'" (Luke 22:31)
Some Christians may believe that Jesus is the only Savior. In fact, all of the devils do so:
"She used to follow Paul and shout, 'These men are servants of the Most High God. They're telling you how you can be saved.'" (Acts 16:17)