“…when they (Isaiah’s words) shall be fulfilled then is the fulfilling of the covenant which the Father hath made unto his people, O house of Israel” (3 Ne 20:12).
“Then shall ye, who are a remnant of the house of Jacob, go forth among them; and ye shall be in the midst of them who shall be many; and ye shall be among them as a lion among the beasts of the forest, and as a young lion among the flocks of sheep, who, if he goeth through both treadeth down and teareth in pieces, and none can deliver….And it shall come to pass, saith the Father, that the sword of my justice shall hang over them at that day; and except they repent it shall fall upon them, saith the Father, yea, even upon all the nations of the Gentiles….And the powers of heaven shall be in the midst of this people (Israel); yea, even I will be in the midst of you.” (3 Ne 20:16-22).
“And then shall they say: How beautiful upon the mountains are the feet of him that bringeth good tidings unto them, that publisheth peace; that bringeth good tidings unto them of good, that publisheth salvation; that saith unto Zion: Thy God reigneth!” (3 Ne 20:40, Isa 52:7).
This is how the Divine Council will acclaim God's glory in these days and in the last days. In Isaiah 6, Isaiah was transported to the Celestial Temple, where he saw the chief angels (seraphim) surrounding the throne of God, praising Him and his works. After being cleansed, Isaiah joins the Divine Council and takes active part in bringing to pass God's plan. 3 Nephi 20:40 is a hymn or psalm from the Divine Council to their Lord Jesus Christ, and if we are true, we will also be invited to join that council someday.
“And then shall a cry go forth: Depart ye, depart ye, go ye out from thence, touch not that which is unclean; go ye out of the midst of her; be ye clean that bear the vessels of the Lord” (3 Ne 20:41).
“...it behooveth the Father that it should come forth from the Gentiles, that he may show forth his power unto the Gentiles, for this cause that the Gentiles, if they will not harden their hearts, that they may repent and come unto me and be baptized in my name and know of the true points of my doctrine, that they may be numbered among my people, O house of Israel;
And when these things come to pass that thy seed shall begin to know these things—it shall be a sign unto them, that they may know that the work of the Father hath already commenced unto the fulfilling of the covenant which he hath made unto the people who are of the house of Israel” (3 Ne 21:6-7).