'Heart' in the Bible

You have captured my heart, my sister, my bride.You have captured my heart with one glance of your eyes,with one jewel of your necklace.

W I sleep, but my heart is awake.A sound! My love is knocking!M Open to me, my sister, my darling,my dove, my perfect one.For my head is drenched with dew,my hair with droplets of the night.

Set me as a seal on your heart,as a seal on your arm.For love is as strong as death;ardent love is as unrelenting as Sheol.Love’s flames are fiery flames—the fiercest of all.