What is "Yashor Al Anashim"?
Rashi: He makes Shoros (rows) of people when he is saved from his illness, and thanks his Creator.
Ibn Ezra: This is surrounding, like "Yashur k'Shach Yekushim." A wall is called Shur ("Banos Tza'adah Alei Shur") because it surrounds the city.
Sha'arei Teshuvah 1:18, 4:19: If he sinned Bein Adam l'Chavero, he has no Kaparah until he returns what he stole, and requests pardon 1 from the one he pained, shamed, or spoke Leshon ha'Ra about him. If he does not pardon him, the sinner must bring a group of three people, up to three times.
Malbim: Tefilah and regret do not suffice. He must or fix his sin. Yashor is to be Meyasher (straighten) his crookedness against Anashim.
What is "Chatasi v'Yashar He'eveisi"?
Sha'arei Teshuvah 4:19: Because I did not see merit for a straight man, and I disgraced him, I must humble myself and admit in front of Rabim.
Malbim: He confesses for Chet, Zadon (intent), and Avon (crookedness of intellect).
What was not Shavah for him?
Rashi: I had no reward in His words 1 .
Ibn Ezra: I did not do what is proper. He openly confesses in front of people!
Malbim: I was crooked and veered from straightness. So I was not Shavah in my body - I became ill via my body veering from equilibrium.
Malbim (Bi'ur ha'Milos): I derived no benefit from it, like "v'Chol Zeh Einenu Shavah Li."
I.e. had I obeyed His words, I would have had reward! (PF)
