John Gill Commentary Joshua 7:22

"So Joshua sent messengers, and they ran unto the tent; and, behold, it was hid in his tent, and the silver under it." — Joshua 7:22 (ASV)

So Joshua sent messengers
Directly to Achan's tent, to see if it was as he had said, and to bring the things with them:

and they ran unto the tent ;
either for joy that the iniquity was discovered, as Kimchi; or that none of the tribe of Judah or of Achan's family or relations should get there before them, and take them from thence and make void the lot; so Jarchi, Ben Gersom, and Abarbinel; but, no doubt, it is remarked, to show the readiness and diligence of the messengers to obey the order of Joshua:

and, behold, [it was] hid in his tent, and the silver under it ;
as Achan had said.