'Faithless' in the Bible

Good sense grants favor, but the way of the faithless is coarse.

A ransom for the righteous is the wicked, and [the] faithless instead of the upright.

The eyes of Yahweh keep watch over knowledge, but he will overthrow the words of the faithless.

She [is] also like a robber lying in wait, and the faithless among mankind she increases.

A bad tooth and a lame foot [is] the trust of a faithless person {in a time} of trouble.