וְשָׁרַ֣ץ הַיְאֹר֮ צְפַרְדְּעִים֒ וְעָלוּ֙ וּבָ֣אוּ בְּבֵיתֶ֔ךָ וּבַחֲדַ֥ר מִשְׁכָּבְךָ֖ וְעַל־מִטָּתֶ֑ךָ וּבְבֵ֤ית עֲבָדֶ֙יךָ֙ וּבְעַמֶּ֔ךָ וּבְתַנּוּרֶ֖יךָ וּבְמִשְׁאֲרוֹתֶֽיךָ׃
And the river shall swarm with frogs, which shall go up and come into thy house, and into thy bed-chamber, and upon thy bed, and into the house of thy servants, and upon thy people, and into thine ovens, and into thy kneading-troughs.
Read kabbalistic (mystical) interpretation of Exodus 7:28: and classical mystical sources.