Bono took time out of his concert at London's O2 Arena this week...
An estimated 40,000 Christians have crammed into London's Excel Centre for the Festival of Life.
The annual event run by the Redeemed Christian Church of God is the largest single gathering of believers in the UK.
Archbishop of York Dr John Sentamu was just one of those invited to preach during the 8 hour service.
Hosted by Pastor EA Adeboye, those gathered heard from a number of speakers, musical acts and drama.
In 2015, Prime Minister at the time David Cameron visited the Festival of Life to give an address.
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