Luke 14:27-31

27 Whoever does not carry the cross and follow me cannot be my disciple.

28 For which of you, intending to build a tower, does not first sit down and estimate the cost, to see whether he has enough to complete it?

29 Otherwise, when he has laid a foundation and is not able to finish, all who see it will begin to ridicule him,

30 saying, "This fellow began to build and was not able to finish.'

31 Or what king, going out to wage war against another king, will not sit down first and consider whether he is able with ten thousand to oppose the one who comes against him with twenty thousand?