Because our identity drives our actions. So, if you believe you are sinful and unworthy of love, you will act like you are sinful and unworthy of love. You will be driven to make poor choices because you feel like there is no way out and shut out the love from those around you since you believe you are not worthy of it.
But the opposite is also true. If you believe you are loved, kind, healing, and selfless, you will be moved to act like it. Your life will become a reflection of these positive things that you believe about yourself.
Recently, a school district near Salt Lake City, Utah, removed the Bible from elementary and middle school libraries. Though it quickly reversed course and returned it to the library shelves, the original decision was made in response to a complaint that the Bible contains pornographic content, and that certain parts are too “violent or vulgar” for young children. Meanwhile, school districts across the country require LGBT content, much of it grossly explicit, in elementary school classrooms as well as libraries. Some even refuse to allow parents to excuse their children from such content.