Luke 14:28-31

“If you wanted to build a building, you would first sit down and decide how much it would cost. You must see if you have enough money to finish the job. If you don’t do that, you might begin the work, but you would not be able to finish. And if you could not finish it, everyone would laugh at you. They would say, ‘This man began to build, but he was not able to finish.’ “If a king is going to fight against another king, first he will sit down and plan. If he has only 10,000 men, he will try to decide if he is able to defeat the other king who has 20,000 men.