How do we know the doctrine of the Golden Rule is true?

The truth of the Golden Rule is grounded in the entirety of Scripture, which ultimately points us to Christ. The phrase 'for this is the law and the prophets' highlights that this command is culminated in the understanding of our need for Christ's redemptive work. Jesus emphasized that the law is intended to reveal our shortcomings and drive us to seek Him as our Savior. Thus, the Golden Rule is not just a moral maxim but a divine truth meant to guide us to Christ, enabling us to fulfill the law through His righteousness. Our inability to fully comply with this teaching serves as a reminder that we must look to Jesus as our advocate and redeemer.