Common misinterpretations treat this verse as abolishing all moral law, promoting lawlessness or antinomianism, or as superseding and rejecting Israel entirely to fuel antisemitism; rather, it allegorically contrasts legalistic bondage under the old covenant with liberating faith in the promise of grace, without negating the law's righteous purpose or God's enduring covenants with Israel.
Galatians 4:31
King James Version (1769)
31 So then, brethren, we are not children of the bondwoman, but of the free.
Galatians 4:31 concludes Paul's allegory of Hagar and Sarah, declaring believers as children of the free woman, not the bondwoman, meaning Christians are heirs of promise through faith in Christ, liberated from the slavery of the Sinai law covenant represented by Hagar and earthly Jerusalem, instead aligned with the freedom of the new covenant and heavenly Jerusalem like Isaac.