Following the passing of Joseph and the founding generation, the Israelites experienced a miraculous and unprecedented population boom. The transition from referring to their forefather as Jacob to calling the people the Israelites suggests a profound shift. Though Jacob's physical presence had departed, his spiritual merit remained to protect his descendants [כלי יקר]. However, there is an alternative perspective on this rapid expansion. The terminology used to describe their growth is often associated with lowly, swarming creatures, hinting at a spiritual decline. Without the guidance of the original seventy souls, the people began to assimilate into negative cultural practices, lowering themselves to the level of the creatures to which they were compared [ספורנו].
The primary approach among commentators is that the sequence of events describes a progressively escalating miracle of physical, numerical, and economic growth. It began with natural fruitfulness, much like a tree yielding its produce [אבן עזרא, ביאור יש״ר], characterized by a complete absence of barrenness or miscarriages [רשב״ם, הכתב והקבלה]. This natural fertility quickly escalated into something extraordinary. Mothers began giving birth to unusually large numbers of children at once, much like fish or swarming creatures producing multiple offspring [אבן עזרא, רלב״ג]. A central tradition points to a miracle where women delivered six children in a single birth, with some suggesting even higher numbers. This explosive growth was a free gift from God, designed to rapidly complete the quota of souls required for the eventual redemption [רש״י, גור אריה, שפתי כהן].
Beyond the sheer number of births, the children experienced exceptionally high survival rates, avoiding the common childhood mortality of the era [רשב״ם, העמק דבר]. Typically, multiple births weaken both the mother and the infants, but this process defied nature. The children were born robust, healthy, and physically mighty [אבן עזרא, העמק דבר, תולדות יצחק]. This newfound might also manifested as national unity, with the people bound tightly together like the interconnected bones of a single body [ביאור יש״ר].
This expansion reached the absolute maximum limit of human reproduction [אבן עזרא]. Furthermore, their increase was not solely demographic but also economic. The Israelites accumulated extraordinary material wealth, which became the original catalyst for Pharaoh to impose heavy taxes in an effort to impoverish them [כלי יקר].
As their numbers swelled, the location of their settlement became a point of debate. Some commentators maintain that the Israelites remained confined strictly to the region of Goshen, an area originally designated to keep them separated from Egyptian society [אבן עזרא, שד״ל, רש ר הירש]. Others assert that they spilled out beyond Goshen's borders, settling throughout the entirety of Egypt. This massive, widespread presence and close proximity to the locals ultimately ignited Egyptian jealousy and hatred, paving the way for the harsh decrees of slavery [העמק דבר, ביאור שטיינזלץ].
Ultimately, the narrative utilizes seven distinct expressions of multiplication. In the Biblical tradition, the number seven symbolizes perfection and harmony. This indicates that their rapid and overwhelming transformation from a single family into a massive nation was not a random demographic event, but a precise, divinely orchestrated plan [קאסוטו].