(יט) כִּ֣י בָא֩ ס֨וּס פַּרְעֹ֜ה בְּרִכְבּ֤וֹ וּבְפָרָשָׁיו֙ בַּיָּ֔ם {ס} וַיָּ֧שֶׁב יְהֹוָ֛ה עֲלֵהֶ֖ם אֶת־מֵ֣י הַיָּ֑ם {ס} וּבְנֵ֧י יִשְׂרָאֵ֛ל הָלְכ֥וּ בַיַּבָּשָׁ֖ה בְּת֥וֹךְ הַיָּֽם׃ {פ}
(19) For the horses of Pharaoh, with his chariots and horsemen, went into the sea; and the LORD turned back on them the waters of the sea; but the Israelites marched on dry ground in the midst of the sea.
וַתִּקַּח֩ מִרְיָ֨ם הַנְּבִיאָ֜ה אֲח֧וֹת אַהֲרֹ֛ן אֶת־הַתֹּ֖ף בְּיָדָ֑הּ וַתֵּצֶ֤אןָ כׇֽל־הַנָּשִׁים֙ אַחֲרֶ֔יהָ בְּתֻפִּ֖ים וּבִמְחֹלֹֽת׃
Then Miriam the prophetess, Aaron’s sister, took a timbrel in her hand, and all the women went out after her in dance with timbrels.
What is remarkable about Miriam's celebration after seeing 15:19?
בתפים ובמחלת. מֻבְטָחוֹת הָיוּ צַדְקָנִיּוֹת שֶׁבַּדּוֹר שֶׁהַקָּבָּ"ה עוֹשֶׂה לָהֶם נִסִּים וְהוֹצִיאוּ תֻפִּים מִמִּצְרַיִם (מכילתא):
בתפים ובמחלת WITH TIMBRELS AND WITH DANCES — The righteous women in that generation were confident that God would perform miracles for them and they accordingly had brought timbrels with them from Egypt (Mekhilta d'Rabbi Yishmael 15:20:2).
According to Rashi, Miriam and the Women packed timbrels because they were so confident in their liberation by G-d, despite the growing danger of the chasing Egyptian army.
What can we learn from Rashi in his remarks on preparing to leave Egypt to apply to celebrating our work as a CJE team?