Why does it say "Eleh Asisa"?
Malbim: Why do you slander your brother, and say that he stole and transgressed adultery? He did not do so, but you did!
Why does Hashem say "I was silent"?
Radak #1: Because I made Myself as if I did not know - I did not return to you like your evil deeds... (refer to 50:21:3:3)
Radak #2: You did evil deeds, and I was silent... (refer to 50:21:3:4)
Malbim: I did not expose your evil, even though it is Emes. How do you slander with Sheker?!
What is the meaning of "Dimisa"?
Rashi #1: You thought that I will be like you, to be pleased with your evil deeds.
Rashi #2: You imagined that I do not know hidden thoughts.
Radak #1: You thought that I will be like you, and not know hidden thoughts.
Radak #2: You thought that I have a body, like you. This is the greatest evil. I will rebuke you for this!
Malbim: If you thought that I could be like you, and arouse quarrels.... (refer to 50:21:4:3)
What is the rebuke?
Radak: I will arrange in front of you everything that you did, so you will know that I knew everything! Now is the time to eradicate the Resha'im, and all will know who are the good and who are the bad - "v'Shavtem u'R'isim Bein Tzadik l'Rasha Bein Oved Elokim la'Asher Lo Avado" (Mal'achi 3:18).
Radak #2: Refer to 50:21:3:4.
Malbim: If I wanted to arouse quarrels, like you, would not need to say Sheker, like you did. I would rebuke you for the evil that you truly did, and show it so you could not deny it! Rather, I hide your evil deeds, and you reveal evil deeds that your brother did not do!