God multiplied the miracles by giving us the wealth in Egypt and then God split the sea so that He could exact punishment on the Egyptians for casting their Israelite children into the Nile. Also God multiplied the booty which the Israelite received in Egypt at the shore of the Red Sea,¹¹ as it said, “We will add wreaths of gold to your spangles of silver” (Song of Songs 1:11) So, “If God had split the sea and not caused us to pass through the sea on dry ground,” it would have been enough of a miracle for us.

footnotes: ¹¹ According to the Midrash when the Egyptians drowned in the sea, all the gold and silver they were carrying (many times what they took in Egypt) washed up on the shore for the taking!