יְשַׁלַּ֬ח בָּהֶ֣ם עָ֭רֹב וַיֹּאכְלֵ֑ם וּ֝צְפַרְדֵּ֗עַ וַתַּשְׁחִיתֵֽם׃
He sent among them swarms of flies, which devoured them; And frogs, which destroyed them.
Read kabbalistic (mystical) interpretation of Psalms 78:45: and classical mystical sources.