Luke 14:28-33

28Which of you, wishing to build a tower, does not first sit down and count the cost to see if he has the resources to complete it? 29Otherwise, if he lays the foundation and is unable to finish the work, everyone who sees it will ridicule him, 30saying, ‘This man could not finish what he started to build.’

31Or what king on his way to war with another king will not first sit down and consider whether he can engage with ten thousand men the one coming against him with twenty thousand? 32And if he is unable, he will send a delegation while the other king is still far off, to ask for terms of peace.

33In the same way, any one of you who does not give up everything he has cannot be My disciple.