1)
Also verse 1 said "Rabas Tzeraruni mi'Ne'urai." Why was this repeated?
1.
Radak: It is common to repeat the matter; this is to strengthen the thanks to Hashem.
2.
Malbim: It is a bigger Chidush that even though they afflicted me from my youth, "Lo Yuchlu Li" (they could not harm me), for Hashem is with me.
2)
What is the meaning of "Lo Yuchlu Li"?
1.
Radak: Yisrael thanks Hashem that we were not eradicated in Galus. We were greatly afflicted in Galus from the beginning until now, but they could not wipe us out, like they wanted.
2.
Malbim: They could not harm me.