"God" is more of a title than a name. It simply means "mighty one". Bible refers to angels and even some men as "gods". The very first commandment says, "You shall have no OTHER gods before me" but there's only one Almighty (who acknowledges that there are other mighty ones). The Almighty may have let the "sons of god" (angels) have a hand in forming creation or asking for their input in how they'd like things done but the breath of life came from the only one capable of giving life; the One Who is Life.