You assume a lot. I stated nothing about jews being cast away
It's not an assumption. The Bible does address the false belief that God cast away His people which He foreknew.
IT IS a false belief of Gentiles.
As he said, you are in error. But Gentiles have long held to the false belief that just because Israel came under judgment - and they are in covenant - and the Second Jewish Temple was destroyed, Gentiles came under the false understanding not knowing Scripture that God had "cast away His people" but Saul says in several places "God forbid!" (i.e. Not true!)
The question on what ground will they reenter. it seems you might imagine it will be under old covenant law and rituals but have not a shred of proof for.
There is no "reentering." Israel was never outside their covenants with God. Not even when it says God divorced His Bride who is Israel were the covenants made void or Israel (God's Bride) ever
not in covenant.
Israel may have turned to idols in their history, but God is not a man that He should lie. HE WILL keep all His promises made to these distinct and separated people.
You wish to re-install that which is obsolete and was ready to vanish 2000 years ago, beggarly elements
The Torah/Law is God's Word. The Word is God's Law/Torah.
If you want to say the Word of God is "obsolete" when it isn't then have at it. You seem hard-pressed to continue in your rejection of God's Word/Torah.
and teach contrary to inspired scripture
Galatians 3:27–29 (KJV 1900) — 27 For as many of you as have been baptized into Christ have put on Christ. 28 There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus. 29 And if ye be Christ’s, then are ye Abraham’s seed, and heirs according to the promise.
Very convenient to exclude WHO God is 'speaking' to in Galatians, as well as
all the letters from Saul. Saul is addressing Jewish Christians who had concerns about their standing in the Abrahamic Covenant especially after becoming Christ-followers (Christian.) It either "convenient" for you to post Galatians 3:27-29, or you're showing your ignorance of the Word of God and the things recorded in its pages concerning Israel's history and culture, their religion and their covenants.
Let's take a closer, unbiased look at Saul's words in the passages of verses preceding your target verses:
23 But before faith came,
we [Jews]
were kept under the law, shut up unto the faith which should afterwards be revealed.
24 Wherefore the law was
our [Jews] schoolmaster to bring
us unto Christ, that
we [Jews] might be justified by faith.
25 But after that faith is come,
we [Jews] are no longer under a schoolmaster.
26 For
ye [Jews]
are all the children of God by faith in Christ Jesus.
27 For as many o
f you [Jews] as have been baptized into Christ have put on Christ.
28 There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for
ye [Jews] are all one in Christ Jesus.
29 And if
ye [Jews] be Christ’s, then are
ye [Jews] Abraham’s seed, and
heirs according to
the promise. Gal. 3:22–29.
Gentiles have never been recipient of the covenant promises God made to the children of Israel. As you can read Saul is addressing Jewish Christians who had concerns of being a Christ-follower (Christian) and Saul re-assured them in this letter that Christ adds to the covenant with Abraham, and they remain children/seed of Abraham.
running afoul of verses such as
Colossians 2:16-17 (KJV)
16 Let no man therefore judge you in meat, or in drink, or in respect of an holyday, or of the new moon, or of the sabbath days:
17 Which are a shadow of things to come; but the body is of Christ.
Galatians 4:9–11 (KJV 1900) — 9 But now, after that ye have known God, or rather are known of God, how turn ye again to the weak and beggarly elements, whereunto ye desire again to be in bondage? 10 Ye observe days, and months, and times, and years. 11 I am afraid of you, lest I have bestowed upon you labour in vain.
The idea there will be a 1000 year millenium upon the return of Christ replete with old testament sacrifices and law is not taught in the New Testament
It is. And the Feasts shall also be observed while the sacrifices will be performed and overseen by the high priest from the family-line of Zadok.
6 Also the sons of the stranger, that join themselves to the LORD,
To serve him, and to love the name of the LORD,
To be his servants,
Every one that keepeth the sabbath from polluting it,
And taketh hold of my covenant;
7 Even them will I bring to my holy mountain,
And make them joyful in my house of prayer:
Their burnt offerings and their sacrifices shall be accepted upon mine altar;
For mine house shall be called an house of prayer for all people.
8 The Lord GOD which gathereth the outcasts of Israel saith,
Yet will I gather others to him, beside those that are gathered unto him.
Isaiah 56:6–8.
And the Torah/Law will also be existing refuting your belief that the Mosaic Law is "obsolete."
16 And it shall come to pass, that every one that is left of all the nations
Which came against Jerusalem
Shall even go up from year to year
To worship the King, the LORD of hosts,
And
to keep the feast of tabernacles.
Zech. 14:16.
15 In those days, and at that time, will I cause the Branch of righteousness to grow up unto David; and he shall execute judgment and righteousness in the land.
16 In those days shall Judah be saved, and Jerusalem shall dwell safely: and this is the name wherewith she shall be called, The LORD our righteousness.
17 For thus saith the LORD; David shall never want a man to sit upon the throne of the house of Israel;
18 Neither shall the priests the Levites want a man before me to offer burnt offerings, and to kindle meat offerings, and to do sacrifice continually.
Jer. 33:14–18.
Please, you need to do more studying of the things you comment and respond to in my threads. I'd prefer that before you reply to any of my threads and comments that you make sure you know the Scripture. It gets tedious form me to continue repeating myself to every new participant who think they know the Word of when they don't.