וַיִּגְעַ֣ר בְּיַם־ס֭וּף וַֽיֶּחֱרָ֑ב וַיּוֹלִיכֵ֥ם בַּ֝תְּהֹמ֗וֹת כַּמִּדְבָּֽר׃
И Он упрекнул Красное море, и оно высохло; и повел их через глубины, как через пустыню.
Rashi on Psalms
and He led them in the depths in the desert The Sea of Reeds was in the desert, for it is written (Exod. 14:13): “the desert has closed upon them, etc.”; (Exod. 3:18): “three days’ journey in the desert.”