John Gill Commentary Numbers 14:38

"But Joshua the son of Nun, and Caleb the son of Jephunneh, remained alive of those men that went to spy out the land." — Numbers 14:38 (ASV)

But Joshua the son of Nun, and Caleb the son of Jephunneh ,
&c.] Here Joshua is set first, as Caleb is in (Numbers 14:30); which shows that they were equal in dignity, and therefore are indifferently put, sometimes the one first, and sometimes the other:

[which were] of the men that went to search the land ;
were two of the spies, and were for the tribes of Judah and Ephraim, (Numbers 13:6Numbers 13:8),

lived [still] ;
were not stricken with death, when the other spies were; though perhaps upon the very spot, and in the same place, and among them, when they were struck dead; but these remained alive, and continued many years after, and entered the good land, and possessed it.