[I don't know how right this is, but it's been fermenting for a while.]
Christianity is not overt. It does not push itself in your face and exert its spirituality.
Christianity is not covert. It does not hide itself behind the curtains or switch itself off in embarrassment.
Christianity is. It's just there, if you choose to see it. Or not there, if you choose not to.
Because everything is an interpretation, but which is the true one?
Modern worship songs are too egocentric. They focus on "I". "I will worship", "I will come", "I live for you". They are difficult songs to sing, if you happen to be facing a low in your spiritual life. And so many people lie every Sunday, singing an "I will / I love you" song to God that they don't mean. Or they think they mean.
Maybe that's why I sometimes prefer hymns that focus on who God is. So even if you're feeling terrible, you can know that the words you're singing are true.