By declaring that all things that Isaiah taught have been and shall be, the Lord described the phenomenon of dual fulfillment or even multiple fulfillment, in which a prophecy may apply in more than one time or place; that is, the prophetic declaration may have a specific fulfillment in Isaiah’s day or in the Savior’s day (the meridian of time) and also in modern times, in the final dispensation. See commentary at 2 Nephi 6:4–5; see also commentary at 3 Nephi 20:15–21.