John 17:25-26

English Standard Version (ESV)

²⁵ O righteous Father, even though the world does not know you, I know you, and these know that you have sent me. ²⁶ I made known to them your name, and I will continue to make it known, that the love with which you have loved me may be in them, and I in them.”

Song of Solomon 8:6 (ESV)

⁶ Set me as a seal [ardor] 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.