Luke 14:28-30

If you wanted to build a tower, 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, then all who would see it would laugh at you. They would say, ‘This man began to build but was not able to finish!’