Have mercy on those who doubt. –Jude 1:22 (ESV)

The fool says in his heart, “There is no God.” They are corrupt, they do abominable deeds; there is none who does good. –Psalm 14:1 (ESV)

They are darkened in their understanding, alienated from the life of God because of the ignorance that is in them, due to their hardness of heart. They have become callous and have given themselves up to sensuality, greedy to practice every kind of impurity.
–Ephesians 4:18-19 (ESV)

Remember that at that time you were separate from Christ, excluded from citizenship in Israel and foreigners to the covenants of the promise, without hope and without God (atheist) in the world. But now in Christ Jesus you who once were far away have been brought near by the blood of Christ.
–Ephesians 2:12-13 (NIV)

The natural person does not accept the things of the Spirit of God, for they are folly to him, and he is not able to understand them because they are spiritually discerned.
–1 Corinthians 2:14 (ESV)

The Holy Spirit says: “Today, if you hear his voice, do not harden your hearts as you did in the rebellion, during the time of testing in the wilderness.” –Hebrews 3:7-8 (NIV)

The wrath of God is being revealed from heaven against all the godlessness and wickedness of people, who suppress the truth by their wickedness, since what may be known about God is plain to them, because God has made it plain to them. For since the creation of the world God’s invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that people are without excuse. For although they knew God, they neither glorified him as God nor gave thanks to him, but their thinking became futile and their foolish hearts were darkened. Although they claimed to be wise, they became fools and exchanged the glory of the immortal God for images made to look like a mortal human being and birds and animals and reptiles (cp. human evolution “March of Progress” illustration). Therefore God gave them over in the sinful desires of their hearts to sexual impurity for the degrading of their bodies with one another. They exchanged the truth about God for a lie, and worshiped and served created things rather than the Creator—who is forever praised. Amen. Because of this, God gave them over to shameful lusts. Even their women exchanged natural sexual relations for unnatural ones. In the same way the men also abandoned natural relations with women and were inflamed with lust for one another. Men committed shameful acts with other men, and received in themselves the due penalty for their error. –Romans 1:18-27 (NIV)

What faith is it then through which we are saved? It may be answered, first, in general, it is a faith in Christ: Christ, and God through Christ, are the proper objects of it. herein, therefore, it is sufficiently, absolutely distinguished from the faith either of ancient or modern heathens. And from the faith of a devil it is fully distinguished by this: it is not barely a speculative, rational thing, a cold, lifeless assent, a train of ideas in the head; but also a disposition of the heart.
–John Wesley, “Salvation by Faith” 1.4

—

Norman Geisler, The Big Book of Christian Apologetics.

Jack Deere, Surprised by the Voice of God, chs. 17-18.

—. Surprised by the Power of the Spirit.

John Sherrill, They Speak With Other Tongues.

John R. Rice, Evolution or the Bible–Which?