1)
What is the meaning of "Terem Tir'un"?
1.
Rashi, Rashbam and Seforno: "You do not yet fear (Hashem)". 1
2.
Ramban #1 (citing Ibn Ezra): It means before I spread out my hands you fear Hashem, but the moment the plague ceases, you will retract. 2
3.
Ramban #2: With reference to past occasions, 3 he pointed out he saw that, before (the cessation of the Makah) the Egyptians fear Hashem, but afterwards not. 4
4.
Targum Yonasan: Moshe knew that before he sent Yisrael away, he would finally fear Hashem.