Some equate singing with faith. Now singing can be an expression of our faith - but it is not, in itself,  faith - unless the song is a "spiritual hymn" birthed within us by the Holy Spirit in the moment. 

We can sing songs about faith and have no faith whatsoever.  In churches full of religion,  not faith, the people prove their faith by singing for all to hear - This outward show is meant to prove their inward reality: a heart deeply in love with Jesus - but it is done by following a man (or woman), not the Holy Spirit  - who would give them a personal song to sing - personal testimony - not "my church" or "my pastor", which is what denominational Christians most often testify of.

No, singing lines from someone else's song takes no faith at all - though the songs say they do. 

We must sing from the depths of our heart - believing what we sing. Some songs have unbelief embedded in them or no concept of present Truth. They sing songs of victory without having won the victory.  They sing about how mighty our God is without ever experiencing His might, never seeing HIM perform a single miracle. 

In denominations,  their faith is demonstrated by continuing to believe in an impotent,  powerless God who never shows up. I submit  to you: this is more about unbelief than faith.