Jamieson, Fausset and Brown on Numbers 14:2-4

2-4. Would God that we had died in Egypt--Such insolence to their generous leaders, and such base ingratitude to God, show the deep degradation of the Israelites, and the absolute necessity of the decree that debarred that generation from entering the promised land [Nu 14:29-35]. They were punished by their wishes being granted to die in that wilderness [He 3:17; Jude 5]. A leader to reconduct them to Egypt is spoken of (Ne 9:17) as actually nominated. The sinfulness and insane folly of their conduct are almost incredible. Their conduct, however, is paralleled by too many among us, who shrink from the smallest difficulties and rather remain slaves to sin than resolutely try to surmount the obstacles that lie in their way to the Canaan above.