Counting the cost is a name often given to a pair of parables told by Jesus in the New Testament, and found in Luke 14:28-33. The name 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:
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 14:28-33, King James Version
Joel B. Green suggests that it is unclear what kind of tower is being referred to in the first parable,[1] but notes that the message is that a "thoroughgoing fidelity to God's salvific aim"[1] is required, "manifest in one's identity as a disciple of Jesus."[1] This involves putting family and possessions second,[2] as in Matthew 8:18-22 and Luke 9:57-62.