Last week I spent three days at a gathering of the leaders of the Religious Peace Fellowships in Stony Point, N.Y. There were representatives from more than a dozen Christian denominations -- from Catholic and Orthodox to Mennonite and Brethren -- as well as Jewish, Muslim and Buddhist peace fellowships. And me, from the Adventist Peace Fellowship. It was the first time such a gathering had taken place in many years. It was clear that while peacemaking in our increasingly violent world was an urgent priority for all of us, working together across denominational and religious lines was something we didn't understand as well.