Well, given my druthers, for general sound reinforcement I'd go for hanging them right next to each other, high above and slightly in front of the pulpit, facing slightly down and away from each other. This will give good dispersion and by having them in front ofthe pulpiut will help minimize feedback.
If your only interest is playing back pre-recorded music then I'd mount them high up towards the corners, again, facing slightly downwards but this time aiming slightly inwards, each aiming about 1/3 of the way in from their respective rear corners.