The sea split and the Jews passed through it to safety. The Egyptians followed them into the dry sea, but G‑d let the water return to its natural state, drowning them all. When the waves of the sea threw the dead Egyptians upon the shore, Moses and Miriam led the Jewish men and women in praising G‑d for rescuing them. After this, the Jews collected the gold, silver, and precious jewels with which the Egyptians had adorned their horses. There was so much wealth that the next day, the 22nd of Nisan, they were still busy collecting it, so Moses had to force them to move on.
Changing Direction
וַיַּסַּע מֹשֶׁה אֶת יִשְׂרָאֵל מִיַּם סוּף וגו': (שמות טו:כב)
Moses had to forcibly make the Israelites set out from the Sea of Reeds. Exodus 15:22

The Jewish people did not tarry out of greed. They were fulfilling G‑d’s commandment to empty Egypt of its wealth. The spiritual dimension of this directive was to salvage all the potentials of holiness present in this wealth.

From this we learn two lessons: First, once we know what our Divine mission in life is, we must be so devoted to it that doing anything else seems unthinkable. On the other hand, as soon as it is clear that it is time to change direction, we must not hesitate. We should apply ourselves to our new mission with the same enthusiasm we gave to our previous mission.

Second, just as the Jews did not want to leave a single piece of Egyptian wealth unelevated, we should desire to bring every last individual closer to G‑d. Until we receive a clear directive to focus on something else, we must view every individual estranged from G‑d as a priceless pearl waiting to be redeemed from Egypt.1