28 Now tell them this: 'As surely as I live, declares the Lord, I will do to you the very things I heard you say. 29 You will all drop dead in this wilderness! Because you complained against me, every one of you who is twenty years old or older and was included in the registration will die. 30 You will not enter and occupy the land I swore to give you. The only exceptions will be Caleb son of Jephunneh and Joshua son of Nun.
Matthew Henry's Commentary on Numbers 14:28-30
Commentary on Numbers 14:20-35
(Read Numbers 14:20-35)
The Lord granted the prayer of Moses so far as not at once to destroy the congregation. But disbelief of the promise forbids the benefit. Those who despise the pleasant land shall be shut out of it. The promise of God should be fulfilled to their children. They wished to die in the wilderness; God made their sin their ruin, took them at their word, and their carcases fell in the wilderness. They were made to groan under the burden of their own sin, which was too heavy for them to bear. Ye shall know my breach of promise, both the causes of it, that it is procured by your sin, for God never leaves any till they first leave him; and the consequences of it, that will produce your ruin. But your little ones, now under twenty years old, which ye, in your unbelief, said should be a prey, them will I bring in. God will let them know that he can put a difference between the guilty and the innocent, and cut them off without touching their children. Thus God would not utterly take away his loving kindness.