Thus, he is to proclaim, “Thus saith the Lord Adonai.” The term Adonai, which translates to "my Lord," signifies the prophet's absolute reliance on the Lord as His servant.
The Lord, aware of the challenges associated with commanding the prophet to confront and counsel the unrighteous, understands how difficult it is to achieve success in this endeavor. Nevertheless, the prophet is obliged to follow through on the Lord’s command, for it is possible that those who receive rebuke and guidance might indeed listen attentively to his prophetic words or exhibit fear—though such a response is difficult to anticipate from the nation of Israel, described metaphorically as the house of the afflictor. They may acknowledge that a true prophet is among them, recognizing the honor associated with the prophet sent from the Lord, and respond with respect to his message.
The all-knowing Lord undoubtedly understands whether the prophet will be heeded. So why does He communicate this in a tentative manner, suggesting uncertainty? Blessed Theodoret offers this explanation: “To prevent anyone from attributing His foreknowledge as the cause of a specific occurrence, He employs expressions of uncertainty to illustrate human free will, thereby preserving His justification on the Day of Judgment.” Consequently, while foreseeing potential disobedience, the Lord utilizes every means possible to turn them away from their shortcomings. Therefore, when it is stated that they might hear or instill fear, this reflects not God’s lack of awareness but a call for repentance. God, who was fully aware of Pharaoh's obstinacy—as evidenced by His declaration, “I know that Pharaoh will not let you go, except by a strong hand and a high muscle” (Exod. III: 19; VI: 1)—remained patient and enduring.