So people are busy fishing out rose vestments for 'Mothering Sunday'; although I'm unclear why today is so observed by those who do not follow either the Tridentine Rite or the 1662 Prayer Book. The theme of the old Roman Mass is (Galatians 4) of our Mother the heavenly Jerusalem; but in the modern rite, the Roman Pontiff is not instructed to have a statio at the basilica of Holy Cross in Jerusalem (the church which the Empress Helena, my Colcestrian concivis, devised to be 'Jerusalem in Rome' and to which she imported cartloads of soil from Jerusalem together with significant relics of the Crucifixion). Sadly, moreover, choirs are rarely required to sing all those lovely Siony texts which embellish the old propers. Common Worship, of course slavishly follows the modern Roman Rite in abandoning the theme of the Heavenly Jerusalem, our Mother; the City whose politeuma we enjoy.
Of course, those old propers and S Paul's teaching in Galatians 4 raise in an acute form the very problem involved in the Good Friday prayers for the Jews. Has God's Covenant with the Jews been superseded? Do they need to take Christ on board to be saved, or are they, alone of all races and peoples, given a Christless way to salvation? It seems to me clear that S Paul teaches throughout Romans that there is no difference between Jew and Gentile either in the problem - sin - or in the solution - faith in Christ. The 'Jews-are-to-remain-Christless' line rests upon an interpretation of Romans 11 which doesn't hold water; I recall that the founder of the late twentieth century New Line on S Paul, Ed Sanders, concluded that, qua exegete of Paul, he was obliged to admit that in Paul's view Jews as well as Gentiles needed Christ (although qua liberal he did not think that Paul's view was now plausible).
So: 'cast out the bondwoman and her son'; Jews both need and are entitled to Christ. The Old Covenant was the type, the shadow, of the reality which is Christ. Not, of couse, that it would be particularly seemly somehow to to seem to single out Jews for mission in a Western society which largely consists of lapsed Christians: it would seem as if we were saying 'We've made a hash of hanging onto our own people so now we're going to try to get our hands on yours'. But the principle needs maintaining; all have sinned and all need Christ.
I have sometimes wondered if Pope Benedict had in his mind, when revising the EF Good Friday Prayer for the Jews, that his own ordaining bishop, Cardinal von Faulhaber, was a member of the group Amici Israel, which proposed revision in the 1920s. (I seem to recall that Merry del Val may have been among those who scuppered the proposal.) But I am not convinced that, in its essence, the original Good Friday Bidding (Let us pray for the unbelieving Jews) was anti-semitic - on the contrary. There have always been Christian Jews and they are as fully privileged as any other Christians ... if not more so. In the Good Friday prayer we were not disdainfully and in a racist way praying against the Jews as a race but for those members of that race who do not believe. The reason why we prayed for them specifically (and not, e.g., by name for the Fijians) was simply their special place in God's dealings with Man and the steady New Testament witness, echoed in Pope Benedict's revised prayer, that the Eschaton will mean the combined redemption of Jew as well as Gentile. There is also, as S Paul reminds us in I Corinthians 10, a sharp reminder for all of us in the fact that the great majority of Jewry, for whom first the Euangelium was intended, failed to hear God's call.
I draw to your attention the book Index Lectionum A Comparative Table of Readings for the Ordinary and Extraordinary Forms of the Roman Rite published in 2016 by Matthew P Hazell (and his wife Lucy; I reviewed it when it first came out. ISBN 978-1-5302-3072-3); if you want to take a serious interest in what the Bugnini junkies did after Vatican II, you really do need to have this book. At the flick of a wrist it reveals that the Novus Ordo Sunday Lectionary entirely dumped this old reading from Galatians (a pitifully bowdlerised version of it was allowed to survive on a Monday morning in Ordinary Time in alternate years).
I can just imagine Screwtape's glee: "The bad news, my dear Wormwood, is that the Christian leaders have decided to encourage their people to become more familiar with the pestilential Enemy propaganda known as The Bible. But all is not lost ... far from it! Our policy is now to work through the soi disant 'liturgical experts', whom we already have securely under our control. They will be easily persuaded to increase the amount of time reading the Bible in Church, while eviscerating the text of passages and ideas which we will convince them are 'difficult'. Thus any teaching which is not currently popular among a certain narrow portion of the intelligentsia in the 1960s will be carefully concealed. The next stage, which we have scheduled for the beginning of the Third Millennium, will be to use the dominant ideologues to promote the notion that the portions of Scripture which have been censored out of public use contain ideas which it is actually forbidden for Christians accept. We will then stir up particular, easily duped, constituencies (our planning department has the German and English episcopates particularly in mind) to demand peremptorily the elimination of these ideas from any public prayers".