Shall know — They shall experience my power and goodness in fighting for them. In that day — When I shall redeem my people: which work was begun by the return of the Jews from Babylon, and perfected by the coming of the Messiah. Behold — That all these promises are the words of the omnipotent, unchangeable God.
Related Commentaries of Isaiah 52:6
Isaiah 52:6
6 Therefore my people shall know my name: therefore they shall know in that day that I am he that doth speak: behold, it is I.