Charles Ellicott 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)

We have sinned ... we will go up and fight. —The emphatic we of this verse may be compared with the “we” of Deuteronomy 1:28. In both instances it was we, without Jehovah. It was a change from cowardice to presumption, not from unbelief to faith.

Ye were ready to go up into the hill. —Some render, Ye made light of going up.