פָּחֲד֤וּ בְצִיּוֹן֙ חַטָּאִ֔ים אָחֲזָ֥ה רְעָדָ֖ה חֲנֵפִ֑ים מִ֣י ׀ יָג֣וּר לָ֗נוּ אֵ֚שׁ אוֹכֵלָ֔ה מִי־יָג֥וּר לָ֖נוּ מוֹקְדֵ֥י עוֹלָֽם׃
The sinners in Zion are afraid; Trembling hath seized the ungodly: ‘Who among us shall dwell with the devouring fire? Who among us shall dwell with everlasting burnings?’
Zohar
And on that day Yitzchak crowned himself and he is the head of the Patriarchs. About that day it is written "In Tzion the sinners feared" (Isaiah 33:14). On that day Yitzchak bounded himself up, and everything was bound up, and Sarah wailed [diff. version: broke down], and the voice of the shofar was very strong. Happy is the lot of the one who passes through them and is saved from them. Rabbi Aba said: because of this we read the parashah of the Binding of Yitzchak on this day, because on this day Yitzchak bound himself up with the lower, and [so] connected/knotted himself with the One Above [diff. version: with Avraham]. When did he bound himself up?At the time when it is written "and he bound his son Yitzchak up" (Genesis 22:9).