Oh, you mean 1 John 2:3-4:
"Hereby we do know that we know Him if we keep His commandments. He that saith, I know Him, and keepeth not His commandments is a liar and the truth is not in Him".
And the companion text - 1 John 5:2-3:
"Hereby we do know we love the children of God when we love God and keep His commandments. For this is the love of God, that we keep His commandments and His commandments are not grievous."
These two texts plainly confirm who it is that is God's elect, God's saints, God's redeemed, God's chosen...whatever you want to call them. And the only question that remains is are you keeping all Ten Commandments, or trying to get into heaven with a 10% discount (I'll let you guess which one I'm talking about. Hint: it's the only one that begins with "remember" that everyone seems to have forgotten)