Like confluent rivers, they flow together. The first illustration posits a condition where a brother or sister is without food or clothes. The point is painfully obvious. Here is an impostor. I think the Apostle Paul would give the same response.
Authentic faith expresses itself in love.
It knows nothing else. Its very nature makes that demand. Inactive and unexpressive faith is utterly contradictory. Even the demons believe that and shudder. Authentic faith expresses itself in love.