Half of the time, the Holy Ghost tries to warn us about certain people that come into our life. The other half of the time he tries to tell us that the sick feeling we get in a situation is not the other person’s fault, rather it is our own hang-ups. A life filled with bias, hatred, judgment, insecurity, fear, delusion and self-righteousness can cloud the soul of anyone you meet. Our job is never to assume,instead it is to listen, communicate, ask questions then ask more, until we know the true depth of someone’s spirit.
You don’t have to say everything to be a light. Sometimes a fire built on a hill will bring interested people to your campfire.
You're going to come across some truly gifted people in your lifetime that seem to know all the answers. However, they lost their personal relationship with God, along the way. Love them anyways, and do everything you can to help them restore that relationship. They are fighting a war that you don't know anything about.