Do we in ministry have a duty to warn those in our congregation of those who come in with wrong intentions? For example, say you get to know a family and start to see a pattern of them financially using people, and they start coming to your church, do you warn your members to be careful? What if the family in question has taken advantage of you personally and then you find out they are asking financial favors from members of your congregation? Is there a line between letting people give willingly and cheerfully and being used? At what point, if any, should we step in and say something?