Joshua 14:6

Then the children of Judah came unto Joshua in Gilgal
Whither he was returned after the conquest of the kings and their kingdoms; these were not the whole tribe of Judah, but some of the chief men of it who accompanied Caleb, for the honour of him, as Ben Gersom observes, he being their prince; and to second his petition, and to show their consent unto, and an approbation of such an assignment to him as he desired;

and Caleb, the son of Jephunneh the Kenezite, said unto him;
whether Caleb or Jephunneh called the Kenezite, and what the reason of the name, are not very material; and of which (See Gill on Numbers 32:12); and as Caleb was personally and singly concerned in the following affair, he alone dressed Joshua, attended with some principal men of his tribe:

thou knowest the thing the Lord said unto Moses the man of God,
concerning thee and me, in Kadeshbarnea;
the place from whence the spies were sent, and whither they returned to Moses there, of whom Caleb speaks with great respect and veneration, which he knew would be very pleasing and endearing to Joshua, who could not but remember what had been said by him concerning himself and Caleb, though it was now forty five years ago; it being so very striking and memorable, that only two of that generation then present should enter into the land of Canaan; the fulfilment of which, in all its circumstances, they had lived to see.