21 But as I live and as the Glory of God fills the whole Earth - 22 not a single person of those who saw my Glory, saw the miracle signs I did in Egypt and the wilderness, and who have tested me over and over and over again, turning a deaf ear to me - 23 not one of them will set eyes on the land I so solemnly promised to their ancestors. No one who has treated me with such repeated contempt will see it. 24 "But my servant Caleb - this is a different story. He has a different spirit; he follows me passionately. I'll bring him into the land that he scouted and his children will inherit it. 25 "Since the Amalekites and Canaanites are so well established in the valleys, for right now change course and head back into the wilderness following the route to the Red Sea." 26 God spoke to Moses and Aaron: 27 "How long is this going to go on, all this grumbling against me by this evil-infested community? I've had my fill of complaints from these grumbling Israelites. 28 Tell them, As I live - God's decree - here's what I'm going to do: 29 Your corpses are going to litter the wilderness - every one of you twenty years and older who was counted in the census, this whole generation of grumblers and grousers.

Matthew Henry's Commentary on Numbers 14:21-29

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.