'Faithless' in the Bible

The righteousness of the upright will deliver them, but the faithless will be captured by their own desires.

From the fruit of his speech a person eats good things, but the faithless desire the fruit of violence.

The wicked become a ransom for the righteous, and the faithless are taken in the place of the upright.

The eyes of the Lord guard knowledge, but he overthrows the words of the faithless person.