Luke 14:27-30

Whosoever doth not bear his own cross, and come after me, cannot be my disciple. For which of you, desiring to build a tower, doth not first sit down and count the cost, whether he have wherewith to complete it? Lest haply, when he hath laid a foundation, and is not able to finish, all that behold begin to mock him, saying, This man began to build, and was not able to finish.