1)
Why did he say "Ach Hu Tzuri"?
1.
Radak: This is to strengthen his trust in Him.
2)
Verse 3 said "Lo Emot Rabah." Why is Rabah omitted here?
1.
Radak: Here it discusses leaving Galus. I will not slip at all. (Above, there could be a small fall, just not a big fall.)
