'A horn' of salvation is an emblem taken from animals, and implies strength. Here it recalls several prophecies, and as a designation of the Messiah, shadows forth His conquering might, all to be used for deliverance to His people. The vision before Zacharias is that of a victor king of Davidic race, long foretold by prophets, who will set Israel free from its foreign oppressors, whether Roman or Idumean, and in whom God Himself 'visits and redeems His people.' There are two kinds of divine visitations--one for mercy and one for judgment. What an unconscious witness it is of men's evil consciences that the use of the phrase has almost exclusively settled down upon the latter meaning! In verses 71-75, the idea of the Messianic salvation is expanded and raised. The word 'salvation' is best construed, as in the Revised Version, as in apposition with and explanatory of 'horn of salvation.' This salvation has issues, which may also be regarded as God's purposes in sending it. These are threefold: first, to show mercy to the dead fathers of the race. That is a striking idea, and pictures the departed as, in their solemn rest, sharing in the joy of Messiah's coming, and perhaps in the blessings which He brings. We may not too closely press the phrase, but it is more than poetry or imagination. The next issue is God's remembrance of His promises, or in other words, His fulfilment of these. The last is that the nation, being set free, should serve God. The external deliverance was in the eyes of devout men like Zacharias precious as a means to an end. Political freedom was needful for God's service, and was valuable mainly as leading to that. The hymn rises far above the mere impatience of a foreign yoke. 'Freedom to worship God,' and God worshipped by a ransomed nation, are Zacharias's ideal of the Messianic times.