Unshakeable faith[1]
ויושע יקוק ביום ההוא את-ישראל מיד מצרים וירא ישראל את-מצרים מת על-שפת הים: וירא ישראל את-היד הגדלה אשר עשה יקוק במצרים וייראו העם את-יקוק ויאמינו ביקוק ובמשה עבדו
Hashem saved the [nation of] Israel on that day from the hand of Egypt. Israel saw the Egyptians dead on the seashore. Israel saw the great hand that Hashem utilized against Egypt, and the nation saw Hashem. They believed in Hashem and in Moshe, His servant[2]
This verse, recited daily as part of the morning prayers, is a bit astounding. It says that after the sea split, the Egyptians went into it, and then the sea collapsed onto them, the Jews believed in Hashem and in Moshe. Our Sages ask[3], that after seeing the amazing ten plagues in Egypt, they didn’t believe in Hashem? Only now? What changed? Furthermore, our Sages tell us[4] that the Jews were small in faith. They were afraid that just like they emerged unscathed from the sea on this side, so too the Egyptians emerged unscathed on the other side. It was only after they saw them dead that they believed. This lack of faith is very hard to understand.