A covenant is like a promise a very strong promise made with god or someone who is of higher authority. Or it is the annoying covenant alien race from halo who have those d u M 8 shields.
        
             
        
        
        
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Philip was defeated- as opposed to Alexander- who was undefeated yet Philip lived to be a lot older than ATG. I suppose that Philip's battles really were a war of mice in comparison to the epic proportions of Alexander's Gaugamela.While on the subject I loved the Spartan's reply to Philip when he sent them the following message " I will raze your towns to the ground if I conquer Sparta" and the Lacedemonians replied "If" in true laconian style. 
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Hope this Helps!,,