Counting the cost
Counting the Cost, or in the NIV: The Cost of Being a Disciple or in the NRSV: The Cost of Discipleship or in the NKJV: Leaving All to Follow Christ, are titles given to the Gospel of Luke passage Luke 14:25-33 which includes a pair of parables told by Jesus. The first title comes from the phrase "count the cost", which occurs in the King James Version of the passage, as well as some other versions.
The two parables are as follows:
And there went great multitudes with him: and he turned, and said unto them, If any man come to me, and hate not his father, and mother, and wife, and children, and brethren, and sisters, yea, and his own life also, he cannot be my disciple. And whosoever doth not bear his cross, and come after me, cannot be my disciple. For which of you, intending to build a tower, sitteth not down first, and counteth the cost, whether he have sufficient to finish it? Lest haply, after he hath laid the foundation, and is not able to finish it, all that behold it begin to mock him, saying, This man began to build, and was not able to finish. Or what king, going to make war against another king, sitteth not down first, and consulteth whether he be able with ten thousand to meet him that cometh against him with twenty thousand? Or else, while the other is yet a great way off, he sendeth an ambassage, and desireth conditions of peace. So likewise, whosoever he be of you that forsaketh not all that he hath, he cannot be my disciple.— Luke 14:25-33, King James Version
Joel B. Green suggests that it is unclear what kind of tower is being referred to in the first parable, but notes that the message is that a "thoroughgoing fidelity to God's salvific aim" is required, "manifest in one's identity as a disciple of Jesus." This involves putting family and possessions second, as in Matthew 8:18-22 and Luke 9:57-62.