The journey through the desert was far more than a simple geographical crossing; it was a continuous test of faith and a profound surrender of personal will to divine providence. Navigating through deep uncertainty and constantly shifting conditions, the Israelites displayed remarkable devotion. They entirely suppressed their own desires to follow the will of God, regardless of their physical comfort [רמב״ן, רבנו בחיי].
The overarching rule for their travels was dictated by how long the divine cloud rested in a given location [אבן עזרא]. Sometimes, the cloud would linger for extensive periods, stretching into many years, such as the nineteen years the nation remained camped at Kadesh [רמב״ן, הטור הארוך, העמק דבר]. During these times, keeping God's charge simply meant patiently fulfilling His command to wait [העמק דבר, ביאור שטיינזלץ].
The primary approach among commentators highlights the intense mental and emotional struggle this required. The desert landscape was uneven, filled with both pleasant and harsh environments. Even when the cloud stopped for a long time in a miserable, unforgiving location and the people desperately wanted to move on, they stayed put out of reverence for God. They waited patiently, never attempting to venture out and find a better, more comfortable place to camp [ספורנו, הכתב והקבלה].
This absolute obedience was equally tested in the opposite scenario. There were times when the Israelites would arrive at a new location in the morning after an exhausting overnight trek. They would unpack their heavy burdens, fully expecting a well-deserved rest, only to be forced to pack everything up and set out again the very next morning or a few days later, despite the massive effort and their overwhelming fatigue [רמב״ן, הטור הארוך]. Yet, within this unpredictable reality, a hidden divine mercy was always present. God ensured that the initiation of their travels and the setting up of their camps always occurred during the daylight hours, sparing them the added hardship of navigating these transitions in the dark [רבנו בחיי].
Ultimately, this entire system of moving and resting served as a constant opportunity for spiritual reward. When the cloud lingered and the people waited, they fulfilled a negative Commandment by restraining themselves from traveling without divine permission, earning a reward just as one does when they passively resist doing wrong. Conversely, when the cloud finally moved and they journeyed forward, they fulfilled a positive Commandment by actively following the word of God [מלבי״ם].