Thematic Bible: Who the love of God is perfected in

My dear children, I am writing this to you that you may not sin; but if anyone does sin, we have an advocate with the Father in Jesus Christ the just; he is himself the propitiation for our sins, though not for ours alone but also for the whole world. This is how we may be sure we know him, by obeying his commands. read more.
He who says, 'I know him,' but does not obey his commands, is a liar and the truth is not in him; but whoever obeys his word, in him love to God is really complete. This is how we may be sure we are in him: