Matt.17.17  And Jesus answered, "O faithless and perverse generation, how long am I to be with you? How long am I to bear with you? Bring him here to me."
Mark.9.19  And he answered them, "O faithless generation, how long am I to be with you? How long am I to bear with you? Bring him to me."
Luke.9.41  Jesus answered, "O faithless and perverse generation, how long am I to be with you and bear with you? Bring your son here."
John.20.27  Then he said to Thomas, "Put your finger here, and see my hands; and put out your hand, and place it in my side; do not be faithless, but believing."
Rom.1.31  foolish, faithless, heartless, ruthless.
2Tim.2.13  if we are faithless, he remains faithful-- for he cannot deny himself.
Rev.21.8  But as for the cowardly, the faithless, the polluted, as for murderers, fornicators, sorcerers, idolaters, and all liars, their lot shall be in the lake that burns with fire and sulphur, which is the second death."