Galatians 4:25

Hagar, who is interpreted as "sojourning," "wandering" or "tarrying," gives birth to Ishmael.… No wonder that the Old Covenant, which is on Mount Sinai, which is in Arabia and nearby to Jerusalem, is stated and alleged in writing to be ephemeral and not perpetual. The sojourning of Hagar stands in contrast with perpetual possession. The name of Mount Sinai means "tribulation," while Arabia means "death."

(Verses 25, 26.) For this is Hagar arising from Mount Sinai, in servitude, which is Agar. For Sinai is a mountain in Arabia, which corresponds to the present Jerusalem, and is in servitude with her children. But the Jerusalem above is free, which is the mother of us all. For it is written: Rejoice, barren one who does not bear, break forth and shout, you who do not travail, for many are the children of the desolate, more numerous than those of the one who has a husband. She did not conceive for a long time, before Christ was born of the Virgin, and she was barren: not yet with the laughter of the world did Isaac, born of the chosen father, resound with the voice of sublime teachings. For Abraham, also interpreted in our language as the chosen father, is referred to with resounding sound. But Hagar, which is interpreted as sojourning, that is, inhabiting, or pilgrimage, or stay, gives birth to Ishmael, who only hears God's commandments and does not become a rustic, bloodthirsty man, roaming the desert. He is an enemy to all his brothers born of a free woman and resists them with a hostile face. It is not surprising that the old Testament, which was established and written on Mount Sinai, which is in Arabia and is adjacent to the now existing Jerusalem, is not eternal: since the inhabitance is different from perpetual possession, and the name of Mount Sinai signifies temptation, and Arabia signifies decline: and on the contrary, the Jerusalem that is above, which is the free and mother of all saints, demonstrates that the present Jerusalem is below, and immersed in lowliness and humility. […]

The bond-woman was called Hagar, and "Hagar" is the word for Mount Sinai in the language of that country. So that it is necessary that all who are born of the Old Covenant should be bondmen, for that mountain where the Old Covenant was delivered hath a name in common with the bondwoman. And it includes Jerusalem, for this is the meaning of, "And answereth to Jerusalem that now is." That is, it borders on, and is contiguous to it. "For she is in bondage with her children." What follows from hence? Not only that she was in bondage and brought forth bondmen, but that this Covenant is so too, whereof the bondwoman was a type. For Jerusalem is adjacent to the mountain of the same name with the bondwoman, and in this mountain the Covenant was delivered. Now where is the type of Sarah?

Mount Sinai is in Arabia. There the law was given to Moses. It is near Jerusalem. That mountain Sinai itself, in the language of the Arabs, is called Hagar. And, it is said, therefore: Hagar and Sarah were types of the two covenants. The slave-girl …

Then he gives the explanation of the mystery when he says: "Sinai is a mountain in Arabia, which hath affinity to that Jerusalem which now is, and is in bondage with her children." But here a difficulty arises: for since Sinai is almost twenty days …