Shirley, the devout Christian of the group cannot turn down a moment to praise Jesus Christ. In the clip above Britta and Shirley are trying to avoid the Glee club when Pierce shows up with a children's choir who are singing about Jesus.
Shirley, true to her Christian roots cannot resist and has to join in with the choir.
Throughout the show, Shirley is always trying to turn the other religious members of the group to her religion, which you can argue many Christians do. This can be seen historically, and in the show Shirley often tries to convert Annie from Judaism to Christianity which can be seen as a representation of the relationship these two religions have historically had with each other.
Shirley, true to her Christian roots cannot resist and has to join in with the choir.
Throughout the show, Shirley is always trying to turn the other religious members of the group to her religion, which you can argue many Christians do. This can be seen historically, and in the show Shirley often tries to convert Annie from Judaism to Christianity which can be seen as a representation of the relationship these two religions have historically had with each other.