The rebuilding of the Second Temple brought a wave of complex emotions, especially for those who remembered the unmatched grandeur of the First Temple. To counter any feelings of disappointment or discouragement born from comparing the present to the past, a firm call to action is directed at both the leadership and the people. They are urged to find strength and avoid despair regarding the construction efforts. This encouragement is rooted in the promise that the glory of this new Temple will eventually grow [רד״ק], and it will serve as the channel through which God will bestow His much-needed blessing upon the nation [מצודת דוד].
The demand for action takes on two distinct meanings among the commentators. One approach views this as a direct call to press forward with the physical labor, requiring the people to gather their strength and finish building the Temple [ביאור שטיינזלץ]. Another perspective looks beyond the physical stones and mortar, connecting this call to action with a deeper spiritual duty. According to this view, the people are being commanded to uphold the Torah and remain faithful to the covenant that was established when they left Egypt [אבן עזרא, רד״ק, מלבי״ם].
The ultimate foundation for all this strength and action is the assurance of God's presence among them. This promise serves as a guarantee that if the people remain faithful to the Torah, His spirit will continue to rest within their camp just as it did during the Exodus. Even if His presence now works through hidden means rather than through the open miracles of the past, God remains fully with them [מלבי״ם].