וַיַּ֣רְא פַּרְעֹ֗ה כִּ֤י הָֽיְתָה֙ הָֽרְוָחָ֔ה וְהַכְבֵּד֙ אֶת־לִבּ֔וֹ וְלֹ֥א שָׁמַ֖ע אֲלֵהֶ֑ם כַּאֲשֶׁ֖ר דִּבֶּ֥ר יְהוָֽה׃ (ס)
But when Pharaoh saw that there was respite, he hardened his heart, and hearkened not unto them; as the LORD had spoken.
Targum Jonathan on Exodus
And Pharoh saw that he was refreshed from his molestation, but hardened his heart, and would not hearken to them, as the Lord had said.