We know from the context of the New Testament that both Jesus and Paul would describe every “tongue” as not only individuals but nations as well. Remember on the day of Pentecost thousands of people all heard the glory of God being declared in their own nation’s or native tongue. When we zoom out and look at the big picture of this verse, here’s what we see and hear:
God wants everyone to belong to Jesus. Every nation has reserved seating in the house of God. Every. Single. One.