Deuteronomy 28:46 Midrash

וְהָי֣וּ בְךָ֔ לְא֖וֹת וּלְמוֹפֵ֑ת וּֽבְזַרְעֲךָ֖ עַד־עוֹלָֽם׃

And they shall be upon thee for a sign and for a wonder, and upon thy seed for ever;