כִּ֣י בָא֩ ס֨וּס פַּרְעֹ֜ה בְּרִכְבּ֤וֹ וּבְפָרָשָׁיו֙ בַּיָּ֔ם וַיָּ֧שֶׁב יְהוָ֛ה עֲלֵהֶ֖ם אֶת־מֵ֣י הַיָּ֑ם וּבְנֵ֧י יִשְׂרָאֵ֛ל הָלְכ֥וּ בַיַּבָּשָׁ֖ה בְּת֥וֹךְ הַיָּֽם׃ (פ)
For the horses of Pharaoh went in with his chariots and with his horsemen into the sea, and the LORD brought back the waters of the sea upon them; but the children of Israel walked on dry land in the midst of the sea.
Read kabbalistic (mystical) interpretation of Exodus 15:19: and classical mystical sources.