“You shall not bear false witness against your neighbor” (Ex 20:16). Christ’s disciples have “put on the new man, created after the likeness of God in true righteousness and holiness” (Eph 4:24). 2505 Truth or truthfulness is the virtue which consists in showing oneself true in deeds and truthful in words, and guarding against duplicity, dissimulation, and hypocrisy. 2506 The Christian is not to “be ashamed of testifying to our Lord” (2 Tim 1:8) in deed and word. Martyrdom is the supreme witness given