וַיִּתֵּ֣ן יְהוָ֡ה אוֹתֹ֣ת וּ֠מֹפְתִים גְּדֹלִ֨ים וְרָעִ֧ים ׀ בְּמִצְרַ֛יִם בְּפַרְעֹ֥ה וּבְכָל־בֵּית֖וֹ לְעֵינֵֽינוּ׃
And the LORD showed signs and wonders, great and sore, upon Egypt, upon Pharaoh, and upon all his house, before our eyes.
Read halakhic rulings (Jewish law) on Deuteronomy 6:22: and classical halakhic sources.