Charles Ellicott Commentary Amos 2:10

"Also I brought you up out of the land of Egypt, and led you forty years in the wilderness, to possess the land of the Amorite." — Amos 2:10 (ASV)

Forty years. —The forty years’ wandering was a punishment for fickleness and cowardice, but during the incidence of this judgment, of which we have only one or two events recorded in the Book of Numbers, God was disciplining and organising a tribe of restless wanderers into a nation (Deuteronomy 32:9–13).