29 For if you lay the foundation and are not able to finish it, everyone who sees it will ridicule you,

Read Luke 14:29 Using Other Translations

Lest haply, after he hath laid the foundation, and is not able to finish it, all that behold it begin to mock him,
Otherwise, when he has laid a foundation and is not able to finish, all who see it begin to mock him,
Otherwise, you might complete only the foundation before running out of money, and then everyone would laugh at you.