What does the Bible say about the multitude in Revelation 7?

In Revelation 7:9-10, John sees an uncountable multitude from every nation and tribe standing before the throne and the Lamb. This great assembly represents the redeemed from every corner of the earth, emphasizing that salvation through Christ is for all people, not limited by nationality or culture. They are clothed in white robes, symbolizing righteousness given to them through the Lamb's sacrifice, a theme prevalent throughout scripture. The multiethnic nature of this gathering reflects God’s sovereign grace in calling His elect from all backgrounds to Himself, demonstrating His mercy and power in saving even the most unlikely individuals.