He that loveth not knoweth not God. S. John having said just above, Every one that loveth is born of God, now proves the same thing from the contrary. He means, he who loveth not God and his neighbour, although he may know God speculatively, does not know Him practically, that Isaiah , experimentally. Just as no one knows experimentally the savour and sweetness of honey unless he taste it. For as taste is known by tasting, so is love known and tasted by actually loving. Wherefore, although S. John might in a similar manner have said, He who is not wise doth not know God, because God is Wisdom; or he who is not patient, knows not God, because God is Patience; or he who is not humble, knows not Christ, because Christ is Humility, and so on—nevertheless, preferred to say, He that loveth not, knoweth not God, because God is Love. This was (1.) Because he is treating of charity, not of Wisdom of Solomon , patience, &c. (2.) Because being full of the love of God and Christ, he breathes and delights in nothing else. For, as S. Bernard says, "Between the bridegroom and the bride, i.e, between lovers, no union need be sought but to love and be loved, for that Spouse is not only loving, but Love Itself." This is what Jeremiah says ( Jeremiah 31:3), "I have loved thee with an everlasting love, therefore with loving-kindness have I drawn thee."
For God is love: both formal and uncreate, and so essential, and also causal and created. For in God and the Divine Essence, on account of Its perfection and simplicity, there are no accidents, but those things which in us are accidents, are in God inseparable from His Essence. Wisdom of Solomon , goodness, love, and power are themselves the Divine Essence. So the Council of Rheims defined against Gilbert. Moreover, God is charity, or love, both in the abstract and the concrete. For He is supreme affection, and loves supremely, and therefore ought to be supremely loved by us in return. God, then, is Love, because He hath supremely loved us. And He hath given us this most clear proof of His love in that He sent His only Begotten Son to save us. Hence S. Augustine and Bede teach that he who loves not his neighbour sins against God, because God is Love.
Again, S. Chrysostom teaches that nothing can be compared with charity, because God Himself, who is incomparable, is Charity. Gagneius declares that we are certain that God loves us with an infinite love because He is very Love Itself. Hence the Fathers infer that Charity commands and embraces all the other virtues, for God commands and includes them.
