The historical memory of the Exodus carries the weight of not only the liberation itself but the overwhelming divine power used to achieve it. God freed the Israelites with immense force, acting entirely against the stubborn will of their Egyptian oppressors. This display of might represents a divine oath God made to redeem His people [חומת אנך]. At the same time, the severe justice directed at the surrounding nations acted as a profound expression of kindness and mercy toward the Israelites who were being saved [אלשיך].
The identity of the redeemed nation is deeply tied to its founding fathers, specifically recognized as the children of both Jacob and Joseph. The primary approach among commentators is to explain this shared title through their history. While Jacob was the biological father of the tribes, Joseph was the one who sustained and nourished them during the years of severe famine in Egypt. Because he preserved their lives, the entire nation is named after him, as if they were his own sons. Furthermore, Joseph is remembered in the story of redemption because his journey is what initially brought the Israelites down to Egypt [רד״ק].
Alongside the historical context, these names reveal the spiritual merits that made the nation worthy of rescue [אבן עזרא, חומת אנך]. The reference to Jacob indicates that the Israelites preserved their unique identity, refusing to change their names or language, and remaining clearly identifiable as his descendants. The inclusion of Joseph points to their moral resilience. The people withstood temptations of immorality and proved they could keep profound secrets, mirroring how Joseph resisted the advances of his master's wife and hid the truth of his betrayal from his father for twenty-two years [אלשיך].
On a deeper level, linking these two figures addresses the dual nature of the Egyptian exile. The hardship in Egypt was actually the merging of two separate decrees, one established in an early covenant with God and the other brought about by the sin of selling Joseph. God redeemed the nation from both of these spiritual debts simultaneously, which is why Jacob and Joseph are recognized side by side [חומת אנך]. This salvation was ultimately complete and eternal, carrying a promise that the Israelites would never again be forced into servitude under the Egyptians [מצודת דוד].