Abraham and Lot offer the world concrete examples of radical hospitality. Both of them had an overflowing love for their fellow man that was stronger than the fear and “stranger danger” that holds most of us back from helping those in need.
Many focus on illicit behavior, but Sodom’s utter lack of hospitality and its culture of fear is why God wiped them off the map, destroying them so utterly that their lush valley is now an ocean of salt.
Torah reading וַיֵּרָא Vayera (“[and] he appeared,”) is a fair warning to us in our day. We must be careful when responding to the strangers in our midst with fear rather than love.