A sharp transition from sovereignty to absolute slavery occurs when the most basic necessities of life, freely provided by nature, become tools of extortion and humiliation. Normally, water and wood are abundant resources that cost nothing, but during the siege and destruction, this reality was entirely overturned [אבן עזרא, ביאור שטיינזלץ]. Terrified of their enemies, the people could no longer safely access rivers to draw water, forcing them to purchase it directly from their oppressors [רש״י, צאינה וראינה]. This desperate situation points to an extreme cost of living: if water, which is naturally free and available, had to be bought with solid silver, it is clear that basic food supplies must have been horrifyingly expensive [לחם דמעה].
The tragedy is deepened by the fact that the victims were forced to pay for what already belonged to them. The primary approach among commentators is that the enemies confiscated the water and wood stored inside Jewish homes, forcing the residents to pay a ransom to buy back their own property [תורה תמימה, לחם דמעה]. Another perspective sees a painful historical irony in this extortion. In earlier times, when the Israelites held power over other nations, they acted with integrity, paying full price for the water they drank without ever resorting to theft. Now, rather than returning the favor, their enemies exploit them [פלגי מים]. Additionally, this crisis is linked to the breakdown of the social structure in Jerusalem before the destruction. The lower classes, whose job was to chop wood and draw water, cast off their duties and refused to work, forcing the general public to pay vast sums of money just to secure these basic services [אלון בכות].
The struggle for wood carried its own unique hardships. In the past, the people simply paid laborers to chop wood in the forest for them. In exile, however, they are forced to chop and carry the wood themselves, only to have the enemy chase them down and steal it [לחם דמעה]. Even worse, the very wood the people managed to purchase was often taken by their captors and used as weapons or heavy yokes to beat and oppress them [אלשיך, פלגי מים].
Beyond the physical resources, the loss of these items evokes a deep longing for vanished wealth. According to this view, the association of water and silver recalls a glorious past when the people drank water from luxurious silver vessels. In stark contrast, the current need to purchase wood reflects a miserable present, where they are forced to pay exorbitant amounts just to obtain simple wooden cups [לחם דמעה].
On a symbolic level, water represents the study of Torah. During times of severe persecution, Jews were forced to bribe prison guards with money simply to ask religious questions to sages who had been locked away [תורה תמימה]. Taking a different conceptual direction, this dynamic is also used to criticize corrupt spiritual leadership. Unworthy leaders, compared to lifeless wood, essentially bought their rabbinic and leadership positions with great sums of money. To recover the costs of purchasing their power, these leaders began charging the public to learn Torah—the spiritual water that is meant to be given freely [אלון בכות].