On your knees. Biblical references, religion and faith in the songs by U2

The songs by U2 can carry many different messages and among them there is a message of Faith and deep religiosity. Looking for a guiding thread from the origins of the band up to now I want to follow up through the songs all the biblical references and, through them, with a personal religious interpretation of the lyrics, I aim to analyse the spirituality of the band and I want to underline how strong and deep is the message that Bono wants to convey us with his lyrics and his music.