וְאָכְל֥וּ אֶת־הַבָּשָׂ֖ר בַּלַּ֣יְלָה הַזֶּ֑ה צְלִי־אֵ֣שׁ וּמַצּ֔וֹת עַל־מְרֹרִ֖ים יֹאכְלֻֽהוּ׃
And they shall eat the flesh in that night, roast with fire, and unleavened bread; with bitter herbs they shall eat it.
Read kabbalistic (mystical) interpretation of Exodus 12:8: and classical mystical sources.