But whoever keeps his word, in him verily is the love of God perfected: by this we know that we are in him.
All Commentaries on 1 John 2:5 Go To 1 John 2
George Leo Haydock
AD 1849
The charity of God is truly perfect. Notwithstanding his lesser failings, he retains the habit of charity and grace, by which he remains united to God.
And by this we know that we are in him; i.e. we are morally, though not absolutely, certain that we are in the state of grace. (Witham)