David dealt fairly with his soldiers.
vv 23-24 “No, my brothers! Don’t be selfish with what the Lord has given us. He has kept us safe and helped us defeat the band of raiders that attacked us. Who will listen when you talk like this? We share and share alike—those who go to battle and those who guard the equipment.”
David had some troublemakers in his army! Some of his soldiers had been too exhausted to pursue the enemy and so stayed with all the baggage whilst the fitter ones carried on the chase. Now these fitter men were unwilling to share the recovered spoil. David would have none of this – he wanted the whole army to share what had been recovered. Doubtless these troublemakers felt they deserved more than these other men – after all, they had worked harder and had been more able to overpower the raiders who had taken the stuff from them in the first place.
David had a different view: the stolen stuff belonged to them all in the first place, and now should be returned to them all. So David makes the point that those who stayed behind had been guarding the baggage – a significant role when there were marauding bands of robbers about. He enforces the idea of learning to share: Caring and Sharing go hand in hand. (It’s not just the Coop’s strap line!)