Proverbs 11:3 “The integrity of the upright guides them, but the unfaithful are destroyed by their duplicity.” Deception, manipulation, betrayal, duplicity, fraud, dishonesty, two-faced are all synonyms for the thought of a dishonest nature often found in those who lack faithfulness.  All of these words describe failure; yet, they all describe common human behavior.A Christian will never be involved in the above but will rather live with honesty, wholesomeness, integrity, trustworthiness and ethics.  One would have to live such a life to represent their Savior.