Lyric discussion by saangers 

Cover art for One Last Thing lyrics by Angels and Airwaves

I don't think he's talking about God although it does fit in very nicely. If you listen to Love and Love II and watch the film the main themes are of love, friendship and community, the intangible qualities of life. I think this song is about believing in LOVE and help each other. being apart of something (a community, a movement, relationship) bigger than ourselves and that when we do/are a part of that war, hatred, material things doesn't count as much

My Opinion

You are sort of close, but you dont even need to think before saying that the main themes of both LOVE I & II Are love, god and hope. Thats what this song is about.