According to Luke: An Analytical Commentary

Luke 1:6

6 And they were both (Zacharias and Elisabeth) righteous (relative, not absolute) before God (see lesson #1 at the end of chapter 1), walking (conducting their daily life) in all the commandments (the moral and ceremonial laws of God) and ordinances (regulations, especially priestly duties and ritual laws) of the Lord (Hebrew: Adonai = Lord/lord, Jehovah = LORD. Greek: Kyrios = both Lord/LORD) blameless (not sinless, but without reproach in keeping God’s Law).