A.T. Robertson Commentary Luke 1:6

"And they were both righteous before God, walking in all the commandments and ordinances of the Lord blameless." — Luke 1:6 (ASV)

Righteous before God (δικαιο εναντιον του θεου). Old Testament conception and idiom. Cf. 2:25 about Simeon. Expanded in Old Testament language. Picture of "noblest product of Old Testament education" (Ragg) is Zacharias and Elisabeth, Mary and Joseph, Simeon and Anna who were "privileged to see with clear eyes the dawn of the New Testament revelation."