But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him. ~ 1 John 2:5 KJV

But he who keeps (treasures) His Word [who bears in mind His precepts, who observes His message in its entirety], truly in him has the love of and for God been perfected (completed, reached maturity). By this we may perceive (know, recognize, and be sure) that we are in Him: ~ 1 John 2:5 AMP