Thematic Bible: King going to war

"Or suppose a king is going to war against another king. He will first sit down and consider whether with 10,000 men he can fight the one coming against him with 20,000 men, won't he? If he can't, he will send a delegation to ask for terms of peace while the other king is still far away. In the same way, none of you can be my disciple unless he gives up all his possessions."