"Babylon the Great" is all the religious institutions. "Institutions" means the "organizations", not the people in the organizations. They (the religious organizations) will be destroyed at the beginning of the 3 1/2 years of the great tribulation.
Many of the individuals who make up the institutions will be okay - it's the institutions themselves that are destroyed.
That is why Jesus said of the religious leaders that they will be gnashing their teeth and weeping when the religious institutions are destroyed, because many of the religious leaders will still be alive as individuals and it will be clear they were frauds.
Revelation says Jesus has eyes like a fiery flame.:"the Son of God...the one who has eyes like a fiery flame." He sees everything hypocritical going on in the congregations/denominations that claim to represent him. The lyrics of this song talk about how "the grand facade soon will burn". It's a good illustration for what will happen to Babylon the Great at the beginning of the 3 1/2 years. Jesus will allow the UN to destroy the religious institutions (not all the people in them, but the organization structures.) Then afterwards, true Christians will follow Christ as head instead of human hypocritical religious frauds. And during that time, some others who were not associating with a religion before will see too that Jesus is the one to follow.
https://www.youtube.com/watch?v=-IhUv4Q6J_o