Matthew Poole and continuators on Numbers 26:65

65 For the LORD had said of them, They shall surely die in the wilderness: and there was not left a man of them , save Caleb the son of Jephunneh, and Joshua the son of Nun.

To wit, of those who then murmured and rebelled against God, as plainly appears both because this threatning and punishment is confined to those transgressours and because otherwise this had not been true, for of those that were then numbred there were now left Eleazar and Ithamar, and possibly many of the Levites, and some others, who being not guilty of that sin did not partake of their judgment. Caleb and Ioshua are mentioned here, as also Numb. 14. not by way of exception, as if these were murmurers, which is utterly denied, Numb. 14. 24. but by way of opposition, to signify that they, though they were two of the spies, and companions of them who were the chief authours and ringleaders of that mutiny, yet they kept themselves from their sin, and therefore God kept them from their plague and destruction, as also he did some others for the same reason.

Marginal references: chap. 14. 28, 29. 1 Cor. 10. 5, 6.