Ye did not believe the Lord — So they could not enter in, because of unbelief. It was not any other sin shut them out of Canaan, but their disbelief of that promise, which was typical of gospel grace: to signify that no sin will ruin us but unbelief, which is a sin against the remedy; and therefore without remedy.
Related Commentaries of Deuteronomy 1:32
Deuteronomy 1:32
32 Yet in this thing ye did not believe the LORD your God,