And as we live in God, our love grows more perfect. So we will not be afraid on the day of judgment, but we can face him with confidence because we are like Christ here in this world.
Such love has no fear because perfect love expels all fear. If we are afraid, it is for fear of judgment, and this shows that his love has not been perfected in us.
We love each other as a result of his loving us first.
References for 1 John 4:19