with hits like "oceans" hillsong united has sold over 16 million albums.t was nominated for an american music award earlier this year. it felt like i was backstage at a concert. there were technicians off to the side. >> less groupie, though. >> joel houston, pastor brian's son is co-lead pastor in new york but also guides hillsong united. >> music has an incredible ability to break down walls and to reach people's hearts. >> a snappy beat, a smidge of scripture have made for a winning and profitable combination. how vital is the music to funding what you do with hillsong? >> well. >> a half, a third? >> to be honest, i don't know the exact amount because we're a nonprofit. so all of the finances come into the nonprofit and are used for the ministry. >> like many mega churches hillsong is shy about discussing their finances. at the services we attended in new york, we were asked not to film the offertory. >> the collective sacrifice of many is what you see in our church. >> one area critics both liberal and conservatives have seized upon are social issues