From the perspective of the non-believer, "be kind" is considered in a material sense, do no harm, be helpful, comforting, be generous, provide medical aid, etc. For a believer it can mean both the material sense as well as the fantasy world of a supernatural realm, where it is your soul/spirit that is of primary concern. Examples: (1) The inquisition would find torture a kindness as it could purge the soul of evil. (2) Mother Teresa used her notoriety as powerful political pressure to prevent the spread of condoms and contraceptives in the third world and was indirectly responsible for many thousands of deaths through aids. Her medical centers were understaffed and lacked adequate medicines, since her primary role as she saw kindness was to pray for the souls of those who were ill. "Be kind" becomes a fickle term if religious fantasy concepts are considered acceptable. From a rational perspective religion does not offer any value beyond being kind to others.