The tragic expedition of the spies follows directly after the narrative of Miriam's punishment to highlight a profound failure to learn from recent events. Miriam suffered leprosy for speaking slander, yet the men chosen to scout the land witnessed her consequence and still proceeded to speak maliciously about the land [רש״י, צרור המור, כלי יקר, ברטנורא].
The expedition was not originally God's idea, but rather a concession to the Israelites' demands. When the people insisted on sending scouts ahead, God left the decision entirely up to Moses, clarifying that it was not a Divine command. By doing so, God allowed the people the room to make a mistake, especially since He had already assured them of the land's goodness [רש״י, רמב״ן, אור החיים]. From Moses' perspective, however, the request initially appeared completely reasonable. In the natural order of warfare, any nation preparing to conquer foreign territory sends scouts to study the roads and fortresses. The Torah does not require relying entirely on miracles; making appropriate, natural preparations for battle is expected [רמב״ן, רבנו בחיי, ספורנו, עמק דבר]. Another perspective suggests that the mission was uniquely beneficial to Moses himself. Because Moses was destined not to enter the land of Israel, an immediate conquest would have brought his life and leadership to an abrupt end. The expedition, which ultimately resulted in a forty-year delay, inadvertently extended his life and his time guiding the people in the desert [שד״ל, צרור המור, כלי יקר, רבנו בחיי].
At the moment of their departure, the selected men were entirely righteous, respected, and worthy individuals; their hearts only turned toward corruption later during the journey [רא״ש, מזרחי, אלשיך]. Men were specifically chosen for this task because the women of that generation held a deep love for the land and would never have spoken against it. The men, by contrast, harbored an underlying resentment and a lingering desire to return to Egypt [כלי יקר].
The original intent of the mission was to seek out the beauty, advantages, and exceptional qualities of the land, aiming to inspire and bring joy to the Israelites ahead of the conquest. This stood in stark contrast to the people's hidden desire to expose the land's flaws, and to the actual behavior of the spies, who ultimately trampled the territory and spread malicious gossip [כלי יקר, הכתב והקבלה, מלבי״ם, עמק דבר]. As they set out, the men were reminded that God was giving them the land as a gift. Even though they were conducting a natural military reconnaissance, they needed to remember that the conquest would not be determined by their own strength. They had no reason to fear the mighty inhabitants or the fortified cities, knowing that victory would come exclusively from God [אור החיים, מלבי״ם].
The strategy of sending exactly one representative from each tribe ensured that the entire nation was invested in the mission. If they succeeded, all would share in the merit, and if they failed, all would bear the resulting punishment equally [רמב״ן, רבנו בחיי]. The primary approach among commentators is that these representatives were not the familiar tribal elders counted earlier in the desert. Instead, they were distinguished, heroic, and exceptional individuals selected from the very best of their tribes, ensuring that the people would have complete faith and trust in their reports.