צַדִּ֣יק אַתָּ֣ה יְהוָ֑ה וְ֝יָשָׁ֗ר מִשְׁפָּטֶֽיךָ׃
Sprawiedliwym jesteś Boże, i prawe wyroki Twoje.
Ramban
MY SIN IS GREATER THAN I CAN BEAR. This is in the form of a question: “You bear the worlds above and below, and is it impossible for You to bear my sin?” Thus the words of Rashi quoting Bereshith Rabbah.43922:25.
The correct plain interpretation is that it is a confession. Cain said: “It is true that my sin is too great to be forgiven, and Thou art righteous, O Eternal, and upright are Thy judgments440Psalms 119:137. even though You have punished me exceedingly. And now behold, Thou hast driven me out this day from the face of the land441Verse 14. for in being a fugitive and a wanderer unable to stay in one place, behold, I am driven from the land and there is no place where I can find rest. And from Thy face shall I be hid441Verse 14. whereas I will not be able to stand before You to pray or bring a sacrifice and meal-offering for I was ashamed, yea, even confounded, because I did bear the reproach of my youth.442Jeremiah 31:19. But what shall I do? Whosoever findeth me shall slay me,441Verse 14. and You in Your manifold loving-kindness did not decree death upon me.” The sense of this is that Cain said before G-d: “Behold, my sin is great, and You have punished me exceedingly, but guard me that I should not be punished more than You have decreed upon me for by being a fugitive and wanderer and unable to build myself a house and fences at any place, the beasts will kill me for your shadow has departed from me.”443See Numbers 14:9 and Ramban there. Thus Cain confessed that man is impotent to save himself by his own strength but only by the watchfulness of the Supreme One upon him.
The correct plain interpretation is that it is a confession. Cain said: “It is true that my sin is too great to be forgiven, and Thou art righteous, O Eternal, and upright are Thy judgments440Psalms 119:137. even though You have punished me exceedingly. And now behold, Thou hast driven me out this day from the face of the land441Verse 14. for in being a fugitive and a wanderer unable to stay in one place, behold, I am driven from the land and there is no place where I can find rest. And from Thy face shall I be hid441Verse 14. whereas I will not be able to stand before You to pray or bring a sacrifice and meal-offering for I was ashamed, yea, even confounded, because I did bear the reproach of my youth.442Jeremiah 31:19. But what shall I do? Whosoever findeth me shall slay me,441Verse 14. and You in Your manifold loving-kindness did not decree death upon me.” The sense of this is that Cain said before G-d: “Behold, my sin is great, and You have punished me exceedingly, but guard me that I should not be punished more than You have decreed upon me for by being a fugitive and wanderer and unable to build myself a house and fences at any place, the beasts will kill me for your shadow has departed from me.”443See Numbers 14:9 and Ramban there. Thus Cain confessed that man is impotent to save himself by his own strength but only by the watchfulness of the Supreme One upon him.
Rabbeinu Bahya
ה' הצדיק ואני ועמי הרשעים, “Hashem is the righteous One whereas I and my people are the wicked ones.” Pharaoh said to Moses in effect: ‘“you who are the messenger of Hashem are righteous and Hashem is righteous in His application of judgments. I and my people are wicked in that we refused to obey His commandments.” Seeing he had repeatedly denied even Hashem’s existence, Pharaoh now spelled out his mistake in detail as befits people confessing a sin. Actually, he only had to confess his own personal sin. However, seeing he was afraid he might be held responsible for the sins of his people because he was their king and he could have restrained them, he confessed their guilt also saying: “I and my people are the wicked ones.”.