A quote for your consideration from Gerald May’s Will & Spirit.

God’s transcendent capacity for loving may well be infinitely greater than the combined capacities of all human beings, but one single person’s potential for loving–if truly opened–is enough of God’s immanence to incinerate everything we know and feel and have come to identify as ourselves.  Each of us, in the act of really loving someone, has touched the fiery edge of this awesomeness and pulled back.  Therefore, it must be understood that though sometimes we restrain our spirits because of ignorance or denial, there are other times when we hold it back because we know it too well.