וְנָֽתַתִּי֙ מֽוֹפְתִ֔ים בַּשָּׁמַ֖יִם וּבָאָ֑רֶץ דָּ֣ם וָאֵ֔שׁ וְתִֽימֲר֖וֹת עָשָֽׁן׃
At magpapakita Ako ng mga kababalaghan sa langit at sa lupa: dugo, at apoy, at mga haligi ng usok.
Mishneh Torah, Leavened and Unleavened Bread
"And with wonders" - this [refers to] the blood, as it is stated (Joel 3:3); "And I will place my wonders in the skies and in the earth; blood and fire and pillars of smoke."