真的? Wiki doesn't seem to agree
Bible can be the origin of many Western literature. With that being said, a song with lyrics mentioning lord doesn't make it a christian song. I like saying "Oh, My God...", but it doesn't make me a born-again Christian. Moreover, please see the link for more information about the background of the song:
http://en.wikipedia.org/wiki/Sailing_(Rod_Stewart_song).
"而是太多的英文的歌曲都是唱信仰的,只是很多从大陆出来的中国人不知道而已,所以对歌词的真正含义不敏感." I don't agree with this comment especailly. When we enjoy a song, do we really need to consider how the so-called mainstream society interprets it? A thousand readers can have a thousand Hamlet. Please don't remind us (i.e. the folks from mainland China) there's an official guide how to read Hamlet. Please.