A national awakening of courage often transforms ordinary people into warriors, leading to a profound joy that ripples through generations. The Ten Tribes, collectively known as Ephraim [מלבי״ם], will experience a sudden surge of bravery as they prepare for God's war against the nations [מלבי״ם, אברבנאל]. Although they are not naturally warriors, they will rise to the occasion, fighting and striking down their enemies with extraordinary heroism. United as one, they will display immense strength on the battlefield [מצודת דוד, רד״ק].
Following their triumph, a deep gladness will fill them. This feeling is compared to the effects of wine; just as wine warms and gladdens the heart of the one who drinks it, the victory will awaken a powerful joy within the fighters [אבן עזרא, רד״ק, אברבנאל]. This celebration will not be limited to the warriors themselves but will spread to their children. The primary approach among commentators understands this as referring to the young boys who are not yet old enough to fight. Watching their fathers secure victory and defeat the enemy, these children will share in the overwhelming happiness [רד״ק, אברבנאל]. Alternatively, this joy is seen as a legacy for future generations. The descendants of these warriors will live in a time where they no longer need to take up arms. Instead, they will look back at the salvation God performed for their ancestors and experience a constant, enduring happiness [מלבי״ם].
Ultimately, this profound gladness is rooted in the clear recognition of God's salvation, causing their hearts to rejoice directly in Him [ביאור שטיינזלץ, מצודת דוד]. This is not simply a reaction to a single past event. It represents a fresh, ongoing joy that will be sparked again and again by the new miracles and divine revelations that God will continually perform for them [מלבי״ם].