4 occurrences across the corpus

King James Version

2 Corinthians 6:15

And what concord hath Christ with Belial? or what part hath he that believeth with an infidel?

1 Timothy 5:8

But if any provide not for his own, and specially for those of his own house, he hath denied the faith, and is worse than an infidel.

Apostolic Fathers

Ignatius to the Ephesians 2:9

They that are of the flesh cannot do the works of the spirit; neither they that are of the spirit the works of the flesh. As he that has faith cannot be an infidel; nor he that is an infidel have faith. But even those things which ye do according to the flesh are spiritual; forasmuch as ye do all things in Jesus Christ.

Ignatius to the Ephesians 2:9

They that are of the flesh cannot do the works of the spirit; neither they that are of the spirit the works of the flesh. As he that has faith cannot be an infidel; nor he that is an infidel have faith. But even those things which ye do according to the flesh are spiritual; forasmuch as ye do all things in Jesus Christ.