Eusebius of Caesarea

These words refer to the return of Christ or to the return of God to heaven. His teaching [will be] heard like thunder by all, and holy Scripture foretells his future judgment of all afterwards. And after this it is said that the Lord will give strength to our kings. And these would be the apostles of Christ, of whom it is written in Psalm 67: “The Lord will give a word to the preachers of the gospel with much power.” Here, also, he mentions Christ by name, humanly known as our Savior, whose horn he says shall be exalted, meaning his invisible power and kingdom. For it is usual for Scripture to call a kingdom a “horn.” It is found also in Psalm 88: “And in my name shall his horn be exalted.”