From this truth believed, from this blessing enjoyed, the love of our brethren takes its rise, which may very justly be admitted as an evidence that our faith is no delusion. His love is shown on the cross. Christ is love. If we love as he loved, we must be willing even to die for each other. The present verse implies that this is a mutual and reciprocal relationship.
Death is given power over everything finite, especially in our period of history.
But death is given no power over love. Love is stronger.