Albert Barnes Commentary Deuteronomy 1:41

"Then ye answered and said unto me, We have sinned against Jehovah, we will go up and fight, according to all that Jehovah our God commanded us. And ye girded on every man his weapons of war, and were forward to go up into the hill-country." — Deuteronomy 1:41 (ASV)

You were ready to go up into the hill - Rather, perhaps, “you made light of going up;” i.e., “you were ready to attempt it as a trifling undertaking.” (Deuteronomy 1:43) shows the outcome of this spirit in action; compare marginal references.