The Lamb's high banquet we await In snow white robes of royal state; And now, the Red Sea's channel past, To Christ our King we sing at last. (religion-online.org)
Scripture understands this — in fact, it is a profound theme of scripture from the beginning, when God dresses Adam and Eve in animal skins before they leave Eden, to the end, when we're all going to be wearing white robes in the new Jerusalem. (religion-online.org)
In KJV Rev 2:26 nations participate in the Messianic Reign, And he that overcometh, and keepeth my works unto the end, to him will I give power over the nations: In KJV Rev 7:9 it is stated, After this I beheld, and, lo, a great multitude, which no man could number, of all nations, and kindreds, and people, and tongues, stood before the throne, and before the Lamb, clothed with white robes, and palms in their hands; (religion-online.org)