An acquaintance of mine, whom I don't know real well but have generally respected, said something recently that got me thinking. He said that on several occasions the Holy Spirit has given him knowledge of things about a person in order to open a door for witnessing to that person. An example he gave was that while he was at an amusement park he felt led to tell a woman about Jesus. As he approached the woman he instantly "knew" where she was born, her age, and how long she had been married. He then proceeded to tell this woman these exact things, and when she was surprised that he knew these things, he told her that God had told him these things in order to show His power and then he shared the plan of salvation with the woman. He says that other people have witnessed this happening and can verify the truth of it. Interested in everyone's thoughts on the matter.