Happy art thou, O Israel: who is like unto thee, O people saved by the LORD, the shield of thy help, and who is the sword of thy excellency! and thine enemies shall be found liars unto thee; and thou shalt tread upon their high places. Happy art thou, etc. - אשרי ashrey. O the happiness of Israel! it is ineffable, inconceivable, because they are a people saved by the Lord - have such a salvation as it becomes the infinite perfections of God to bestow; he is their help - their never-failing strength, and the shield of that help - he defends their defense, saves them and preserves them in the state of salvation.
Sword of thy excellency - Or whose sword - his all-conquering Word, is thine excellency, in its promises, threatenings, precepts, etc., etc. St. Paul, in his exhortation to the Christians at Ephesus, uses the same metaphor, Take unto you the Sword of the Spirit, which is the word of God.
Thine enemies shall be found liars - Who said thou shouldst never be able to gain the possession of this good land; for thou shalt tread on - subdue, their high places - even their best fortified cities.
The blessings contained in this chapter belong also to the spiritual Israel of God, who, according to the Divine promise, shall have a complete victory over all their spiritual foes, shall have all their inward enemies, the whole of the carnal mind, destroyed, (for the blood of Jesus Christ, applied by the energy of the eternal Spirit, shall not only blot out all their sin, but purify their hearts from all unrighteousness); and thus, being delivered from their enemies, they shall love God with all their heart, and serve him in righteousness and true holiness, without fear before him all the days of their life. There are many circumstances and expressions in this ode similar to several in the prophetical blessing pronounced by Jacob on his twelve sons, Genesis 49, for the subject is the same in both Chapter s, the reader is therefore requested to compare the two places, and to consider the notes on each, as they have some tendency to cast light on each other. Both these Chapter s constitute a part of those Scriptures which, according to St. Paul, Romans 15:4, were written for our learning; and, as to instruct the reader and make him wise unto salvation was the gracious design of God, we should particularly beg of him "that we may in such wise hear them, read, mark, learn, and inwardly digest them, that, by patience and comfort of his holy word, we may embrace and ever hold fast the blessed hope of everlasting life which he has given us in our Savior Jesus Christ" - Collect for the second Sunday in Advent.
Commentary on the Bible, by Adam Clarke [1831].