1 John 2:5

5Whoeverὃςhoweverδ’ἂνmay keepτηρῇHisαὐτοῦτὸνwordλόγον,trulyἀληθῶςinἐνhimτούτῳtheἡloveἀγάπητοῦof Godθεοῦhas been perfectedτετελείωται.Byἐνthisτούτῳwe knowγινώσκομενthatὅτιinἐνHimαὐτῷwe areἐσμεν·

But whoever may keep His word, truly in him the love of God has been perfected. In this we know that we are in Him: