A dramatic new phase begins in the conflict with the Egyptian king, launching the third cycle of plagues. While the earlier plagues proved to the Egyptians that God is present and rules over everything, this new cycle is designed to show His absolute control over creation and His perfect justice. The coming disasters are not random. They are a direct response to Egypt's rebellion, teaching them that their very existence on the land depends entirely on God's will [אברבנאל, ביאור יש״ר, רש ר הירש]. As He does at the start of every plague cycle, God instructs Moses to approach the king openly and deliver an early morning warning [מלבי״ם, אברבנאל].
Unlike previous morning encounters, there is no mention of Pharaoh going out to the river. Some suggest that he went out that morning for a different reason or to observe a special festival [אבן עזרא, הטור הארוך]. Another perspective, however, reveals a hidden reality behind the king's routine. Pharaoh, who presented himself to his people as a god, used to secretly relieve himself in the river to maintain his divine illusion. Once he realized that his secret was out and that Moses knew the truth, Pharaoh began hiding and relieving himself inside his own home. Therefore, God commands Moses to wake up early and confront Pharaoh specifically at this private moment. This timing proves to the king that nothing is hidden from God, forcing Pharaoh to face his own human frailty in stark contrast to his divine claims [שפתי כהן].
Moses is told to present himself before the king, a directive that carries deep physical and mental significance. He is required to stand completely upright, without any of the bowing or lowering of the head normally expected when facing a monarch. He must stand as a superior facing an inferior, because God has made him a master and ruler over Pharaoh [אור החיים, פרדס יוסף]. While the Egyptian magicians can no longer even stand in Moses's presence, he stands proudly before the king to deliver an unprecedented threat [קאסוטו]. Yet, this lack of submission is strictly directed at Pharaoh; internally, Moses is expected to remain completely humble and lowly out of his awe for God [אור החיים]. Standing tall, Moses issues a stern warning about the impending plague of hail, which is destined to strike Egypt as an act of divine judgment and a sword raised against them for their actions [ביאור יש״ר].