The scriptures walk a fine line that can rightly appear to be saying one thing and not another.
Well, your way of stating this appear to insinuate ~ and I know this is not your intention ~ that God's Word is... and God Himself is... deceptive, which He is surely not. I would rather state it thusly, that just from a human standpoint, we can understand things in God's Word in senses or contexts that are different from what they actually are, in which case there is no deception, but only misunderstanding. But as Paul says in 2 Thessalonians 2, God can and does, in His sovereignty over all His creation send delusions, which is to say God is instrumental in causing unbelievers to embrace the Antichrist, who is the one who deceives, and therefore to believe what is false:
"The coming of the lawless one is by the activity of Satan with all power and false signs and wonders, and with all wicked deception for those who are perishing, because they refused to love the truth and so be saved... God sends them a strong delusion, so that they may believe what is false, in order that all may be condemned who did not believe the truth but had pleasure in unrighteousness."
But in this case the passages that you gave (and others) speak of specifically of "the house of Israel"
Right, God's Israel, His household, which consists only of His elect. Sure.
and also of the remnant bloodline which is no longer of the house of Israel but has been cast out and in need of being grafted back in not unlike the gentiles.
Right, the "partial hardening now on Israel" that is being and will be removed.
Wherein, "rightly dividing the word of truth" is needed. If you will notice much of what is said of Israel in Romans 11 is even stated in past tense.
Absolutely. This is simultaneous now and not yet of the Gospel ~ which is to say "inaugurated but not yet consummated," which applies to many, many things throughout the New Testament.
It is the house of Israel that Christ "is finished" with.
You know, it's unnecessary to quibble, but it is
through Christ, because of His finished work or redemption on the cross, that God is building His Israel. Again, when Jesus cried, "It is finished!"... He was referring to His work of redemption... that it is completely accomplished.
In accordance with what you are saying (I think), we can understand it in terms of what Paul says in Romans 8:29-30...
"...those whom (God) foreknew He also predestined to be conformed to the image of His Son, in order that He might be the firstborn among many brothers. And those whom He predestined He also called, and those whom He called He also justified, and those whom He justified He also glorified."
Yes, this is all past tense. So, to us, the glorification is yet to come ~ even for those who are already deceased but in and with Jesus; this is what is commonly called the intermediate state ~ but is an absolute certainty. All in Christ will be glorified at His return. So, not yet a reality, but the victory already won, in and through Christ. So Israel, God's household, is complete eternally speaking ~ we all have eternal life now ~ but not yet complete temporally speaking ~ we will all truly have eternal life in the age to come.
For a house is built and its foundation 'finished" before the upper structure is built.
So then, we and the bloodline honor those who went before, for what we build was not even begun until their part was finished. It is that foundation that we build upon, and if it were not finished, what we build will fail. But it is finished, and therefore Christ as much as said, "upon this rock I will build my church; and the gates of hell shall not prevail against it"--not even referring to Peter, a Jew, but to the word from God.
The bloodline is irrelevant, really; it was never synonymous with God's Israel. We are all one in Christ Jesus. I'm not sure if you would agree with me regarding who God's true Jews are, but no matter; Paul clearly says in Romans 2:28-29,
"no one is a Jew who is merely one outwardly, nor is circumcision outward and physical. But a Jew is one inwardly, and circumcision is a matter of the heart, by the Spirit, not by the letter. His praise is not from man but from God."
One day God will be finished, even temporally speaking, building His household, which He's really been building since the events of Genesis 3, which was made possible once and for all in the finished word of redemption, accomplished by Christ Jesus on the cross.
Grace and peace to you, Scott.