For we know in part, and we prophesy in part,

Now ¹  by this we know that we have come to know God: ²  if we keep his commandments.

So then from now on we acknowledge ¹  no one from an outward human point of view. ²  Even though we have known Christ from such a human point of view, ³  now we do not know him in that way any longer.

But whoever obeys his ¹  word, truly in this person ²  the love of God has been perfected. By this we know that we are in him.

Children, it is the last hour, and just as you heard that the antichrist is coming, so now many antichrists ¹  have appeared. We know from this that it is the last hour.

By this ¹  we know that we reside in God ²  and he in us: in that he has given us of his Spirit. ³ 

By this ¹  we know that we love the children of God: whenever we love God and obey his commandments.

And the person who keeps his commandments resides ¹  in God, ²  and God ³  in him. Now by this ⁴  we know that God ⁵  resides in us: by the Spirit he has given us.

We are from God; the person who knows God listens to us, but ¹  whoever is not from God does not listen to us. By this ²  we know the Spirit of truth and the spirit of deceit. ³ 

And we know that the Son of God has come and has given us insight to know ¹  him who is true, and we are in him who is true, in his Son Jesus Christ. This one ²  is the true God and eternal life.