In Revelation 7:9, the apostle John had an amazing vision of heaven. He said: "After these things I looked, and behold, a great multitude which no one could number of all nations, tribes, peoples, and tongues, standing before the throne and before the Lamb, clothed with white robes, with palm branches in their hands." Furthermore, we find out who these people are by flipping down to verse 14 of the same chapter: An elder said to the apostle John, "These are the ones who come out of the great tribulation, and washed their robes and made them white in the blood of the Lamb."
Now, for many of us, trying to convey this scene inside our heads is very difficult to conceive. Nevertheless, fear not! When we're watching track & field in prime time on NBC tonight, we will at least get a tiny glimpse of what the apostle John saw in heaven. Yes, the Olympic Stadium only has a seating capacity of 65,000 people. However, despite that fact, this is a great way to imagine the throne room of God filled to the brim with possibly hundreds of millions to billions of people who've came out of the worst period in human history and are worshipping God.
Moreover, we could take this a step further. Let's say that the minimum amount of people standing before God's throne during the great tribulation period is 100 million people. Therefore, when we're watching the track & field event and viewing all those people, let's try to think about an additional 1,537 stadiums filled to full capacity with 65,000 people apiece; and this will give us somewhat of a picture of what the apostle John saw some 1850 to over 1900 years ago.