Biblical Context:
The narrative of Pharaoh confessing his sin and pleading for relief is situated within the broader context of the Exodus account, specifically during the series of plagues that God inflicted upon Egypt. This account is primarily found in the Book of Exodus, chapters 7 through 12. The plagues were divine judgments against Egypt, intended to compel Pharaoh to release the Israelites from bondage.

Scriptural Account:
The specific instance of Pharaoh confessing his sin occurs during the seventh plague, the plague of hail. In Exodus 9:27-28 , Pharaoh summons Moses and Aaron and admits his wrongdoing: "Then Pharaoh summoned Moses and Aaron. 'This time I have sinned,' he said to them. 'The LORD is righteous, and I and my people are wicked. Pray to the LORD, for there has been enough of God’s thunder and hail. I will let you go; you do not need to stay any longer.'"

Analysis:
Pharaoh's confession is significant as it marks a rare moment of acknowledgment of sin and recognition of the LORD's righteousness. This admission, however, is not born out of genuine repentance but rather a desire to alleviate the immediate suffering caused by the plague. Pharaoh's plea for relief is a pragmatic response to the overwhelming power of God displayed through the plagues.

Theological Implications:
Pharaoh's confession highlights the tension between human obstinacy and divine sovereignty. Despite witnessing the power of God, Pharaoh's heart remains hardened, illustrating the depth of human rebellion against divine authority. His temporary admission of sin underscores the difference between worldly sorrow and godly repentance. As noted in 2 Corinthians 7:10 , "Godly sorrow brings repentance that leads to salvation without regret, but worldly sorrow brings death."

Moses' Role:
Moses serves as the mediator between God and Pharaoh. His intercession is crucial, as Pharaoh requests Moses to pray to the LORD for the cessation of the plague. This intercessory role foreshadows the ultimate mediation of Christ, who intercedes on behalf of humanity.

Pharaoh's Hardened Heart:
Despite his confession, Pharaoh's heart remains hardened, a recurring theme throughout the plagues. This hardening is both a result of Pharaoh's own choices and a divine act, as seen in Exodus 9:12 : "But the LORD hardened Pharaoh’s heart, and he would not listen to them, just as the LORD had told Moses." This dual aspect of hardening serves to demonstrate God's sovereignty and the fulfillment of His purposes.

Lessons for Believers:
The account of Pharaoh's confession and plea for relief serves as a cautionary tale for believers. It warns against superficial repentance and highlights the importance of a genuine, heartfelt turning to God. The narrative encourages believers to recognize God's righteousness and to respond with true repentance and faith.

Historical and Cultural Context:
In the ancient Near Eastern context, Pharaoh was considered a divine figure, embodying the gods of Egypt. His admission of sin and acknowledgment of the LORD's righteousness would have been a profound statement, challenging the prevailing religious and cultural norms of the time. This confrontation between the God of Israel and the gods of Egypt underscores the supremacy of the LORD over all earthly powers.

Conclusion:
The episode of Pharaoh confessing his sin and pleading for relief is a pivotal moment in the Exodus narrative, revealing the interplay between divine judgment and human response. It serves as a powerful reminder of God's justice, mercy, and the necessity of true repentance.