Charles Ellicott Commentary Psalms 106:24-27

"Yea, they despised the pleasant land, They believed not his word, But murmured in their tents, And hearkened not unto the voice of Jehovah. Therefore he sware unto them, That he would overthrow them in the wilderness, And that he would overthrow their seed among the nations, And scatter them in the lands." — Psalms 106:24-27 (ASV)

The rebellion that followed the report of the spies.