The Church sends people out to care for the needs of others. For example, there are many Catholic charity organisations whose mission it is to help poor people develop better lifestyles, by providing education, medical care etc. ("those who love God must love their brothers and sisters also" - John) This care is given because missionaries believe they should love others as they love God, and as God loves them. John Allen Chau was an American missionary who was killed by the Sentinelese, a tribe in voluntary isolation, in attempt to introduce the tribe to Christianity.