Thematic Bible: King going to war

Or what king, when he is setting out to fight another king, does not first sit down and consider if with ten thousand men he is able to meet one who is coming against him with twenty thousand? And if he cannot, then, while the other is still at a distance, he sends envoys and asks for terms of peace. And so with every one of you who does not bid farewell to all he has--he cannot be a disciple of mine.