Leaving a nation's borders and property completely unguarded to serve God at a central spiritual location presents a massive security challenge. Naturally, a large and fertile country attracts hostile neighbors, and when all the men leave their frontier towns to journey to Jerusalem, it creates the perfect opportunity for an invasion. Yet, the Divine promise completely reverses this expectation. Abandoning physical defenses for the sake of fulfilling a Commandment becomes the ultimate guarantee of the nation's safety. God promises to completely expel the surrounding nations, removing them from sight so that their very presence will no longer cause distress [רש״י, ביאור יש״ר, אור החיים]. This expulsion leads to an expansion of the borders, eventually including the territories across the Jordan River [רא״ש, חזקוני]. Because this territorial expansion scatters the people far from the Temple, making constant visits impossible, God established just three specific festivals a year for mass pilgrimage [רש״י].
This arrangement creates a supernatural reality. Instead of leaving the land vulnerable, the pilgrimage itself serves as the nation's protective shield, proving that the state is guarded by its direct connection to God at its spiritual center rather than by an army stationed at its borders [מלבי״ם, רש״ר הירש]. Commentators offer different perspectives on how this miraculous defense mechanism operates. One approach suggests that God instills such intense fear into the hearts of neighboring nations that they will not even think of attacking [אבן עזרא, רלב״ג, קאסוטו]. Others note that while the enemies might inwardly desire to take the land, divine dread paralyzes them, preventing them from turning their desires into action [ביאור יש״ר, אבן עזרא הקצר]. Another perspective frames this deterrence as a matter of simple logic among the enemies: they will reason that if God easily drove out the previous, well-entrenched inhabitants, it would be impossible to defeat the Israelites while they are actively engaged in the commandments of their God [רא״ש, הדר זקנים, בכור שור, דעת זקנים, חזקוני].
This promised protection is incredibly comprehensive. It not only prevents foreign armies from conquering the country but also provides security on an individual level, stopping lone thieves from taking advantage of empty homes [העמק דבר]. Miraculously, this divine oversight extends even to the animal kingdom. Livestock left behind, such as a grazing cow or a pecking hen, will remain completely safe from wild predators during the pilgrimage, reflecting the principle that harm does not befall those engaged in a divine mission [תורה תמימה, העמק דבר, בכור שור, פרדס יוסף]. Ultimately, this deep connection to the physical land defines the parameters of the Commandment itself, as the obligation to travel to Jerusalem for the festivals applies exclusively to those who actually own property in the Land of Israel [תורה תמימה, פרדס יוסף].