1)
What is the meaning of "Zera Ya'avdenu"?
1.
Rashi: Zera Yisrael, who always serve Him.
2.
Malbim: These are Tzadikim who serve Hashem.
2)
What is the meaning of "Yesaper la'Shem la'Dor"?
1.
Rashi: The verse should be re-arranged. Will be told to the last generation, l'Shem Hashem and for His praise, what He did to that Zera.
2.
Radak: He will call and tell in the name of Hashem, and tell them, even though other nations will repent, only Yisrael will be called Am Hashem.
3.
Malbim: Only Tzadikim who served Hashem will be counted in generations of the world; Resha'im will not. It is as if they did not exist.
