Song of Songs 8:5-7 (ESV)
5 Who is that coming up from the wilderness,
leaning on her beloved?
Under the apple tree I awakened you.
There your mother was in labor with you;
there she who bore you was in labor.
6 Set me as a seal upon your heart,
as a seal upon your arm,
for love is strong as death,
jealousy is fierce as the grave.
Its flashes are flashes of fire,
the very flame of the Lord.
7 Many waters cannot quench love,
neither can floods drown it.
If a man offered for love
all the wealth of his house,
he would be utterly despised.