מדרש אויף ישעיהו 13:9

“Then [God] speaks to them in anger” (Psalms 2:5). But it is written [that God is] “a graceful and compassionate God, [who is slow to anger]” (Exodus 34:6 and Psalms 86:15). [But if He is so slow to anger, why isn’t that on display as He speaks to the nations in our verse?] Rather, He is merciful [and slow to anger] to Israel, but to the idolatrous nations [he directs] anger and wrath, as it is said, “Behold, the day of the Lord is coming, with fury and fierce anger” (Isaiah 13:9). Therefore is said, “Then [God] speaks to them in anger” (Psalms 2:5).

(Exodus 12:12) "And I shall pass ("ve'avarti") through the land of Egypt": R. Yehudah says: As a king, who makes the rounds of his kingdom. Variantly: I shall place My wrath ("evrathi") and My fear in Egypt. "evrah" is wrath, as in (Psalms 78:49) "He sent His burning anger upon them — evrah and scorn, and affliction," and (Isaiah 13:9) "Behold, the day of the L–rd is coming — fury and evrah and burning wrath, etc."