A.T. Robertson Commentary Luke 1:68

"Blessed [be] the Lord, the God of Israel; For he hath visited and wrought redemption for his people," — Luke 1:68 (ASV)

Hath visited (επεσκεψατο). An old Greek word with a Hebraic colouring to look into with a view to help. The papyri have plenty of examples of the verb in the sense of inspecting, examining.

Redemption (λυτρωσιν) here originally referred to political redemption, but with a moral and spiritual basis (verses 75,77).