The dramatic episode of Abram's descent into Egypt comes to a close with his safe departure after his wife's true identity is revealed. Pharaoh issues orders, but the primary approach among commentators is that these instructions are not directed at Abram himself [רש״י, אבן עזרא, שד ל ואחרים]. Instead, Pharaoh commands his own men regarding Abram. Now that the public knows Sarai is truly his wife, Abram faces the exact life-threatening danger he originally feared [אלשיך]. Having recognized the plagues as a direct act of God, Pharaoh is terrified of further divine punishment [מלבי״ם, קאסוטו]. To prevent this, he assigns guards to protect the couple from the Egyptian populace, ensuring they are neither harmed nor robbed during their journey [רד״ק, בכור שור, מחוקקי יהודה].
At the same time, this escort serves an additional purpose of supervision and restriction. The guards are also tasked with enforcing the expulsion, making sure Abram actually leaves the country without lingering [רש ר הירש, ביאור שטיינזלץ, דברי דוד].
The departure itself is not a humiliating banishment, but rather a respectful and honorable escort [רש״י, מזרחי, גור אריה]. This is evident from the fact that Abram leaves heavily laden with livestock, silver, and gold, a reality that does not fit a person sent away in disgrace. His escorts maintain their watch until he safely crosses the Egyptian border [רד״ק]. Remarkably, despite Abram concealing the truth from Pharaoh, God's providence ensures a miraculous outcome. The Egyptians do not confiscate the numerous gifts they had previously given him, allowing him to depart with all his newly acquired wealth [הטור הארוך, העמק דבר, צאינה וראינה].
Because Pharaoh provides this protective escort for Abram, he earns a distinct reward. It is as a direct result of this merit that the Egyptians are later permitted to subjugate the Israelites for hundreds of years [תורה תמימה].
This entire episode establishes a powerful historical pattern, where the actions of the ancestors foreshadow the future of their descendants. Just as Abram travels to Egypt because of a famine, faces danger from Pharaoh, is saved when God strikes the ruler with plagues, and is ultimately sent away unhindered with great wealth, the exact same sequence of events unfolds generations later during the Exodus of the Israelites [ביאור יש״ר, קאסוטו, רש ר הירש].