Numbers 32:8-13

This is what your fathers did when I sent them from Kadesh-barnea to see the land! For when they went up to the Valley of Eshcol and saw the land, they discouraged the hearts of the Israelites so that they did not go into the land which the LORD had given them. And the LORD’S anger was kindled on that day and He swore an oath, saying, ‘None of the men who came up from Egypt, from twenty years old and upward, shall see the land which I promised to Abraham, to Isaac, and to Jacob, because they have not followed Me completely, except Caleb the son of Jephunneh the Kenizzite and Joshua the son of Nun, for they have followed the LORD completely.’ So the LORD’S anger was kindled against the sons of Israel (Jacob) and He made them wander in the wilderness forty years, until the entire generation of those who had done evil in the sight of the LORD was destroyed.