שִׂימֵ֨נִי כַֽחוֹתָ֜ם עַל־לִבֶּ֗ךָ כַּֽחוֹתָם֙ עַל־זְרוֹעֶ֔ךָ כִּֽי־עַזָּ֤ה כַמָּ֙וֶת֙ אַהֲבָ֔ה קָשָׁ֥ה כִשְׁא֖וֹל קִנְאָ֑ה רְשָׁפֶ֕יהָ רִשְׁפֵּ֕י אֵ֖שׁ שַׁלְהֶ֥בֶתְיָֽה׃
Rashi on Song of Songs
Set me as a seal. For the sake of that love, seal me upon Your heart,6In the same manner that a seal is affixed on one’s hand and is not removed, so too, set me as a seal upon Your heart. (Metzudas Dovid) so that You do not forget me, and You will see.
Ezra ben Solomon on Song of Songs
Place me like a seal: When we separate during the time of exile, place me like that well known seal.
Rashi on Song of Songs
For love is as strong as death. The extent of my love that I loved You is to me equal to my death, for I am killed for Your sake.7My love to You is so strong that I would choose death before relinquishing my love for You. (Metzudas Dovid)