'Perfection' in the Bible

But whoever obeys His Message, in him love for God has in very deed reached perfection. By this we can know that we are in Him.

No one has ever yet seen God. If we love one another, God continues in union with us, and His love in all its perfection is in our hearts.

Our love will be manifested in all its perfection by our having complete confidence on the day of the Judgement; because just what He is, we also are in the world.