So Pharaoh’s heart stiffened and he would not let the children of Israel go, just as Hashem had spoken through Moshe.
Torah Temimah does not list a primary unit on this exact closing passuk in the present harvest. The verse restates the hardening of Pharaoh’s heart at the end of the hail narrative, sealing the parsha’s arc.
כַּאֲשֶׁר דִּבֶּר ה׳ בְּיַד מֹשֶׁה — סִיּוּם הַפָּרָשָׁה בְּקִיּוּם דְּבַר ה׳: לֵב פַּרְעֹה חָזָק, וְיִשְׂרָאֵל עֲדַיִן לֹא יָצְאוּ.
English: “As Hashem had spoken through Moshe” — the parsha closes with the fulfillment of the divine word: Pharaoh’s heart remains hard, and Israel has not yet gone out.