A sharp transition from serving God in joy and abundance to a tragic reality of slavery highlights the depth of a national collapse. This severe shift is the direct result of ingratitude, operating on an exact measure-for-measure basis. Because the people refused to serve their Creator during times of plenty, they are condemned to serve their enemies in a state of absolute deprivation [רבנו בחיי]. In this fallen state, they lose the privilege of having their labor done by others and are instead forced to perform the labor of strangers [תורה תמימה].
God sends these enemies actively, much like provoking and releasing a wild beast upon its prey [ביאור יש״ר]. These foreign nations will wage war and impose cruel subjugation upon the Israelites even while they are still living within the Land of Israel [העמק דבר]. The resulting enslavement is marked by extreme physical distress, as the enemies will intentionally starve and strip the people, leaving them to suffer in hunger, thirst, and nakedness [בכור שור].
This state of total deprivation spans a wide spectrum of existential, physical, and mental voids. It begins with the absence of the most basic household items, such as a lamp or a table, and elementary food staples like salt and vinegar. It extends to deep personal losses, such as living without a spouse—a condition that drains life of joy and blessing—or the lack of assistance for someone who is disabled. Ultimately, it reaches the level of mental and spiritual emptiness, manifesting as a loss of sanity or a disconnection from Torah study, which is considered a loss equal to everything else combined [תורה תמימה]. Yet, this extreme poverty and lack also serve as a final crucible. It becomes the only remaining method to refine, humble, and ultimately repair the people [רבנו בחיי].
Adding to the physical deprivation is an unbearable yoke of iron. The primary approach among commentators is that this represents a metaphor for harsh slavery, brutal labor, and crushing pressure [ביאור יש״ר, בכור שור]. However, this yoke is also understood as a profound mental burden. It represents endless worries and anxieties that trap a person like iron chains from which they cannot break free [תורה תמימה]. Historically, some identify this heavy yoke with the period of Greek rule during the Second Temple era, when harsh decrees were forcefully imposed to prevent the Israelites from observing God's commandments [רלב״ג]. This tragic deterioration of abysmal lack, physical enslavement, and mental anguish will not pause on its own; it will continue relentlessly until it brings about complete destruction and ruin.