New American Standard Bible (©1995)
"Otherwise, when he has laid a foundation and is not able to finish, all who observe it begin to ridicule him,
King James Bible
Lest haply, after he hath laid the foundation, and is not able to finish it, all that behold it begin to mock him,
Darby Bible Translation
in order that, having laid the foundation of it, and not being able to finish it, all who see it do not begin to mock at him,
English Revised Version
Lest haply, when he hath laid a foundation, and is not able to finish, all that behold begin to mock him,
Online Parallel Bible