This is the most important decision you will ever make in your life. This shows itself through loving relationships. This especially shows itself in your relationship to other members of His family. He gathers His family into local churches. He wants you to be a responsible growing member in a local church.
SIN alters the ability to have loving relationships.
SIN is disobedience. It separates us from God and damages our ability to relate to people. He is the only mediator. He did everything necessary to restore relationships. He lived the perfect life, died, and came out of the grave alive.