Today I sat through a management course where we were reviewing communications. One of the points made concerned knowing your audience, their backgrounds, their likes and dislikes, their beliefs and bias. If you know your audience and anticipate how they may react then how you deliver the message to them should change. Paul did that perfectly in Acts 23: 7-9. He knew his audience well enough to cause them to be divided and thus creating dissension so they could not reach a decision against him.
I thought about the times we try to talk to people about Jesus and fail. We have to understand that one size does not fill all. As we try to spread the Good News, we need to take the time to get to know them. If we know their background we can better communicate to them and hopefully bring them to accept Jesus as their Savior.