This is one of those phrases most people have heard and may not know where it came from. When I went to seek out the source myself, I was reminded that it came from the New Testament and was a part of a scripture. Here the writer was saying that knowing Jesus would set you free. However, that is not how most people use it today. For example, in one of Oprah Winfrey’s life classes she used this to assist people in talking about how keeping secrets deeply hidden have impacted their life. Don Miguel Ruiz talks about the truth setting you free as the need to stop lying to one’s self and thus ending the suffering we create for ourselves.