He shows that such a comparison is not arbitrary. The thought of Hagar necessarily leads to the legislation of Sinai. For this he uses the name by which Sinai is called in Arabia, that is, among the Hagarenes. He also uses the topographical relation between Sinai and Jerusalem, the center of life under the Law and of all the powers that governed it. How does the name Hagar inevitably suggest the thought of the Law? It does so because "Sinai in the language of the Arabs is called Hagar" (Oecumenius, blessed Theophylact). For Hagar is Mount Sinai in Arabia. Sinai, in Arabia, among the inhabitants of Arabia, the descendants of Hagar, bears the name Hagar. Therefore, when one remembers Hagar, one recalls Sinai. And when one recalls Sinai, one also remembers the legislation of Sinai. Chrysostom explains this connection of names and combination of ideas as follows: "The slave woman was called Hagar. And Mount Sinai, in the language of that country, also signifies a slave woman." The Vulgate and others do not read, "For Hagar is Mount Sinai," but, without Hagar, "For Sinai is a mountain in Arabia." The thought is that Mount Sinai is in Arabia, where the Hagarenes live, the descendants of Hagar. Thus, at the thought of Sinai, one thinks also of Arabia. From Arabia one passes to its inhabitants, the Hagarenes, and from them to Hagar. Conversely, by the same path, from Hagar one passes from thought to thought until reaching Sinai and the legislation of Sinai. However one explains it, one must hold this thought: according to the Apostle, the relation of Hagar to Sinai is providential. Therefore, when he points to the reflection of the character of the Sinai Law in Hagar's properties, he acts in accordance with God's intentions. How does Sinai topographically point to Jerusalem, the center of subjection to the Law? "It corresponds to the present Jerusalem." It corresponds, systoichei: "That mountain corresponds to this earthly Jerusalem" (blessed Theodoret). "It is akin to it and closely points to it" (Chrysostom). One may also say that it stands opposite it, face to face. About half a day's journey from Mount Sinai begins a level plain, stretching as far as the mountains of Judea, where Jerusalem immediately stands. Thus, if one were raised above this plain and looked south, his gaze would rest on Sinai. If he turned north, he would meet Jerusalem. In between, nothing would hold the attention. Sinai seems to escort one toward Jerusalem, and Jerusalem toward Sinai. In this respect another word of Chrysostom is not far from the truth: "Jerusalem, even by its location, is not set at a great distance from this mountain, whose name signifies a slave woman." The actual distance between them is twelve days' journey. This is how Sinai corresponds to Jerusalem. God so arranged it that the legislation of Sinai found its seat in Jerusalem and reigns there. By all this, the Apostle seems to say, we must be instructed. All this is an indication to us by the finger of God. "And she is in bondage with her children." Who is in bondage or slavery, being in a state beneath a yoke? One may understand Hagar with her offspring, the Law with those under the Law, and Jerusalem with its inhabitants and the inhabitants of all Judea. For Jerusalem is Judea's metropolis, or civic mother. In the original it is not clear to what these words should be referred exclusively. But since Jerusalem stands immediately before, and the following discourse is also about Jerusalem, though about the Jerusalem opposed to the present one, it is closer to refer them to Jerusalem. The slavery of Jerusalem is understood here not as civic slavery, not that it was then under Roman power. It is religious and moral slavery to the Law. Its burden was felt most keenly in Jerusalem, which was full of such zealots for the Law as the Pharisees and, among them, the Zealots. The Apostle himself more than once experienced this weight. Later he also suffered because he refused to be enslaved like them.