John Calvin Reformed @genevareformer

23. But if ye will not do so. He makes a solemn protestation that they will deal wickedly, if they break their promise: and at the same time denounces punishment against them, as if he were summoning them before the tribunal of God.

John Gill Reformed Baptist @doctorgill

Build ye cities for your little ones, and folds for your sheep,.... For their safety and security, as they proposed to do: and do that which proceedeth out of your mouth; all that they had promised.

Geneva Bible Notes Reformed @genevanotes

But if ye will not do so, behold, ye have sinned against the LORD: and be sure your sin will find you out. (i) You shall assuredly be punished for your sin.