2:4 live by his faith. This great truth, which under Martin Luther became the watchword of the Reformation, is quoted three times in the New Testament (Romans 1:17; Galatians 3:11; Hebrews 10:38). All three emphasized that those who are “justified” (that is, declared and made righteous in the sight of a holy God) are justified, not by the works of the law, but by faith in the Word of God and His provision for their justification through the substitutionary death and resurrection of Christ for their sins.