Irenaeus

And Paul in like manner declares, "Love is the fulfilling of the law:" and [he declares] that when all other things have been destroyed, there shall remain "faith, hope, and love; but the greatest of all is love;" and that apart from the love of God, neither knowledge avails anything, nor the understanding of mysteries, nor faith, nor prophecy, but that without love all are hollow and vain; moreover, that love makes man perfect; and that he who loves God is perfect, both in this world and in that which is to come. For we do never cease from loving God; but in proportion as we continue to contemplate Him, so much the more do we love Him.