Depict a conceptual image inspired by a biblical verse, Galatians 4:23-26. There are two main aspects in the image: Mount Sinai, representing bondage, and a celestial version of Jerusalem, representing freedom. Ultimately, the image should communicate the concept of two covenants, one born of enslavement and one born of promise. This should be visualized in a manner that enhances the perspective and depth of the image, emphasizing the contrast between the two elements.