The laying of the foundation stone for the Second Temple was a moment of profound and deeply divided emotions, where loud weeping mixed with shouts of joy. The younger generation, along with many others who had never seen the original sanctuary, erupted in loud cheers. Their joy stemmed from the sheer relief of leaving exile and the tremendous privilege of rebuilding the Temple [רש״י, מצודת דוד, ביאור שטיינזלץ]. Beyond the immediate excitement, their celebration carried a deeper spiritual understanding. Unlike the days of Joshua, when the land was taken by military force—a conquest that by its very nature could eventually be undone—this new building effort was happening by established right and official permission. Because of this, they believed the holiness of this new construction would be permanent and never be canceled [מלבי״ם].
In sharp contrast, the elders of the community, those seventy years and older who still carried memories of the First Temple built by Solomon, experienced a profound crisis [מצודת דוד, ביאור שטיינזלץ]. As they watched the new foundations being laid, the structure appeared small and unimpressive compared to the magnificent building they once knew [מצודת דוד, ביאור שטיינזלץ]. Even if the main hall's dimensions were similar, the foundation stones of this new building were much smaller than Solomon's massive stones, which had measured eight to ten cubits [רלב״ג]. The very same eyes that had physically seen the glory of the First Temple were now looking at the founding of the second, and the severe visual gap between the two sights brought them to tears [מצודת דוד, מלבי״ם]. There is a subtle difference in how commentators understand the focus of their grief. One approach explains that the elders wept specifically over the current foundations being laid, mourning the diminished state of the new building [מצודת דוד, אבן עזרא]. Another perspective suggests their tears were driven purely by a deep longing for the past, as the present construction caused them to vividly remember the First Temple as it once stood proudly on its own foundations [רש״י, ביאור שטיינזלץ].
Beyond the physical appearance of the stones, the elders' tears also flowed from a national and spiritual realization. They understood that this rebuilding was taking place under the sponsorship and strict limitations of a foreign ruler, King Cyrus. Furthermore, the entire process lacked the open miracles that had defined the Israelites' historic entry into the land, making the harsh reality of their current situation impossible to ignore [מלבי״ם].