How do we know the commandment against adultery is true?

The commandment against adultery is rooted in God's unchanging moral law as revealed in Scripture. This commandment is not merely cultural but reflects God's design for marriage and relationships. Adultery undermines the very foundation of marriage, which God established in the beginning. Moreover, Jesus reaffirms this command by teaching that even lustful thoughts constitute adultery, showing the heart's condition and intent are significant in God's eyes (Matthew 5:27-28). This deepens our understanding that the commandment is not just about the physical act but about the faithfulness and integrity required in both human and divine relationships. Thus, the truth of this commandment is affirmed through its biblical foundation and the divine intention behind it.