Set me as a seal upon your heart, as a seal upon your arm: for love is as strong as death; jealousy is cruel as the grave: its flames are flames of fire, a most vehement flame.
All Commentaries on Song of Songs 8:6 Go To Song of Songs 8
Aquinas Study Bible
AD 2017
Set me as a seal upon your heart: by loving me perfectly, since what is loved above all else is said to be placed upon the heart.
seal upon your arm: by protecting me with your powerful arm. (Nicholas of Lyra)