Galatians 4:25

Hagar] Some MSS of the Epistle omit this word here, in which case we should render: 'Sinai is a mountain in Arabia' (so RM)—the land of Hagar's descendants. Sinai and Jerusalem mean the same thing—law and bondage; Hagar typifies both. On St. Paul's use of allegorical interpretation, cp. 1 Corinthians 9:9; Galatians 3:18; 2 Corinthians 3:13; 2 Corinthians 3:14. As Hagar corresponds to (Mount Sinai, which is now represented by) the earthly Jerusalem, so Sarah corresponds to the ideal Jerusalem which is in heaven, of which all true Christians are citizens. With the whole passage cp. Hebrews 12:18.