2. The Apostle, in this verse, applies to a particular case, viz., as regards the children of God, the adage employed in a general sense, as regarding all fathers and sons in the preceding. In the foregoing part of this Epistle, he gave it as a sign and argument of our loving God, if we loved our neighbour. Now, by an argument, e converso, he shows, that if we love God, we love our neighbour, the love of both being inseparable; for, the motive of both is the very same, as has been shown (4:12). It
1 John 5:2