In this is our love made perfect, that we may have boldness in the day of judgment: because as he is, so are we in this world.
Read Chapter 4
Augustine of Hippo
AD 430
He tells how each may prove himself, what progress charity has made in him or rather what progress he has made in charity. For if charity is God, God is capable neither of proficiency nor of deficiency: that charity is said to be making proficiency in you, means only that you make proficiency in it. Ask therefore what proficiency you have made in charity, and what your heart will answer you, that you may know the measure of your profiting. For he has promised to show us in what we may know Him, and has said, In this is love made perfect in us. Ask, in what? That we have boldness in the day of judgment. Whoso has boldness in the day of judgment, in that man is charity made perfect. What is it to have boldness in the day of judgment? Not to fear lest the day of judgment should come. There are men who do not believe in a day of judgment; these cannot have boldness in a day which they do not believe will come. Let us pass these: may God awaken them, that they may live; why speak we of the ...
In this is the love of God perfected, that we should have confidence, &c. Conf. Greek παζζησίαν, i.e, liberty, boldness in speaking1st. In this, i.e, with this end and fruit. Perfect charity produces this result, viz, confidence in the day of judgment—both the particular and the general judgment. Hence the righteous desire the coming of the Lord, and desire like Paul to be dissolved, and to be with Christ. As S. Augustine says, "They live with patience, and die with delight." John descends from charity to its fruits. Of these he enumerates thus: (1.) Confidence to live and die trustfully. (2.) That the loving soul becomes without fear. (3.) That she obtains of God whatever she asks.
2d. And more powerfully. In this, i.e, God hath loved us and doth love us to such a purpose, and we in our turn are so allured by this precious love that we fully and perfectly love Him back again. And He so abides, I say, in us, that when we shall be examined by Him in the day of judgment concern...
The charity of God (which may either signify the love by which we love God, or by which God loves us) perfected with us, or in us, and so possesseth our souls, as to give us an humble confidence of our salvation, when we shall appear before his tribunal at the day of judgment: because as he is, we also are in this world. These words are differently expounded. They may signify, that as God is always loving us, and giving us marks and effects of his love, so we in this world by his grace are always loving him and our neighbour, and increasing in this love, which gives us a confidence of our salvation. Or they may bear this sense, that as Jesus Christ was suffering in this world for us, so we are suffering for his sake. (Witham)