Why is understanding the two covenants important for Christians?

The topic of the two covenants, as elaborated in Galatians 4, is essential for Christians as it illustrates the distinction between the Old Covenant of the law and the New Covenant of grace. The Old Covenant, represented by Hagar, symbolizes bondage and a system reliant on human efforts to achieve righteousness. In contrast, the New Covenant, represented by Sarah, signifies freedom and salvation conditioned upon faith in Jesus Christ. Recognizing this difference aids believers in understanding that salvation cannot be conditioned by their works, but solely by God's grace, which liberates them from the curse of the law.