Jamieson, Fausset and Brown on Deuteronomy 1:34-36

34-36. the Lord heard the voice of your words, and was wroth--In consequence of this aggravated offense (unbelief followed by open rebellion), the Israelites were doomed, in the righteous judgment of God, to a life of wandering in that dreary wilderness till the whole adult generation had disappeared by death. The only exceptions mentioned are Caleb and Joshua, who was to be Moses' successor.