Thou hast broken the yoke of his burden, etc. The coming of the Messiah sets the Israelites free, removes the yoke from off their neck, breaks the rod wherewith their shoulders were beaten, delivers them from bondage into the "glorious liberty of the children of God."
Not, however, in an earthly sense, since the Messiah's kingdom was not of this world. The "yoke" is that of sin, the "oppressor" is that prince of darkness, who had well-nigh brought all mankind under his dominion when Christ came.
His oppressor; literally, his task-master—the same word which is used of the Egyptian taskmasters in Exodus 5:6. As in the day of Midian. The "day of Midian" is probably the time of Israel's deliverance from the Midianite oppression by Gideon ( 7:19-25).
The special characteristic of the deliverance was, as Dr. Kay well observes, "that it was accomplished without military prowess by a small body of men selected out of Israel, selected expressly in order that Israel might not vaunt itself against the Lord, saying, My own hand hath saved me ( 7:2)."