Luke:14:28-33 For which of you, desiring to put up a tower, does not first give much thought to the price, if he will have enough to make it complete?  For fear that if he makes a start and is not able to go on with it to the end, all who see it will be laughing at him,  And saying, This man made a start at building and is not able to make it complete.  Or what king, going to war with another king, will not first take thought if he will be strong enough, with ten thousand men, to keep off him who comes against him with twenty thousand?  Or while the other is still a great distance away, he sends representatives requesting conditions of peace.  And so whoever is not ready to give up all he has may not be my disciple.