Joe Carter has a great post on the nature of God and pacifism:
This may strike some people as rather obvious and others as quite absurd. But any Christian who takes the Bible seriously must either concede that point or suffer from a self-imposed cognitive dissonance. Believing that Christ is the Son of God requires accepting that he is the same Being as the “Old Testament God.” You can’t point to Jesus as evidence to deny the warlike characteristics of God without doing violence to the doctrine of the Trinity.
We attempt to exclude God's warlike attributes by focusing on other more "gentle" traits. But that leaves us with the question of which is the "real God." Is God a God of “justice” or is He a God of “mercy?“ He is, of course, both. Justice and Mercy, and Love and all the other attributes of God are one because God is one. We cannot pick and choose our favorites among these attributes. We must accept God as He is and accept that He appears to have a “warlike” nature it is precisely because of these very characteristics. Keeping this in mind will also help us gain a better understanding of the nature of war.
You should read the whole thing, but I'm particularly interested in Joe's comments about accepting God complete and whole. Far too often I've heard the phrase, "I can't believe in a god that ..." Sorry folks, it doesn't work that way. YWHY, the God of the Bible, is who HE is.
You don't get to take only the attributes of God you like. God isn't a buffet table where you get to pick and choose. God's more like the 72 oz. steak at The Big Texan. Either you eat the whole thing, or you're going to have to pay.
I know that's not what people want to hear, but there it is.