What Brachos are on a Tzadik's head?
R. Yonah: Brachos of Shamayim from above (Bereishis 49:25); they are carried out (not just in potential).
R. Yonah (according to Mashal): Something that descends from Shamayim, first it descends on the head.
Malbim: One who does an act of Tzedek, all bless him due to the good that he influences to all. It is as if the entire world put their hands on his head and bless him.
How does Chamas (robbery) cover the mouths of Resha'im?
Rashi: It kills them.
R. Yonah: The evil and damage that their lips do via gossip and imposing their fear on people, this Chamas suffices to cover them, even without the Chamas of their deeds. This is like "Ki Chamas Levanon Yechaseka" (Chabakuk 2:17).
Malbim: The Rasha, via doing Chamas, which is the opposite of Tzedek, not only others do not bless him - also he tries to cover his deeds, for they have a curse, and not a Brachah.
