Some years ago, a Godly pastor made his son-in-law assistant pastor. The son-in-law quickly distinguished himself as a blatant incompetant in every area but one: holding on to power. He carefully crushed any successful teacher in their Christian school, as well as any successful lay person. If anyone did anything successful in the church, the son-in-law took charge, running it into the ground, but holding on to his power. The pastor co-operated fully, being cowed by threats of losing his daughter and grandchildren. After the two of them had run their once-successful church into the ground, they left, and the church recovered under another pastor.
Too many other Christians have told me similar stories: the pastor hires incompetant family members who then destroy anyone they see as a threat to their power. Sometimes, it is the pastor's wife, grasping all the pastoral authority she can. Sometimes his children get postitions in a Christian school or in the church.
Other times, it might be the principal, or it might be important people in the church who put their family members into unearned positions of authority. One Christian college president made his daughters professors as soon as they had received their bachelor's degrees.
There are always exceptions, but these cases pretty well produce situations in which any Christian blessed by God will be stopped by jealous and incompetant family members who hold leadership postitions. Sadly, the best thing to do when you see a Christian organization that is "family-owned and operated" is to go elsewhere.