In the Old Testament all the world is narrowed down to the people of Israel, which is eventually narrowed down to One—Jesus! Jesus is Israel reduced to one in order that all the world might be saved through Him.
Perhaps the question that needs answering is, “How?” How can we run the race? How can we be good shepherds of the flock? How can we live and walk as part of the flock?
We gather and join in this great multitude because the Lamb is at its center, and the Lamb’s Kingdom ushers in the peaceable eternity of life resurrected.