A light to lighten the Gentiles, and the glory of thy people Israel.
A light to lighten the Gentiles (then in thick darkness), and the glory of thy people of Israel - already Thine, and now, in the believing portion of it, to be more gloriously so than ever. It will be observed that this 'swan-like song, bidding an eternal farewell to this terrestrial life,' to use the words of Olshausen, takes a more comprehensive view of the kingdom of Christ than that of Zacharias (cf. Luke 1:68-79), though the kingdom they sing of is one.