The word "behold" alerts us to a new person in the story. Your language may have a way of doing this. (See: [[rc://en/ta/man/jit/writing-participants]])
The word "Israel" is a metonym for the people of Israel. To "console" someone is to give them comfort, or "consolation." The words "consolation of Israel" are a metonym for the Christ or Messiah who would comfort or bring consolation to the people of Israel. Alternate translation: "the one who would comfort the people of Israel" (See: [[rc://en/ta/man/jit/figs-metonymy]])