What I believe about the old covenant is that the new one is much better because the law is given in our hearts. What I don't believe is that the new covenant cancelled the promises of good for us when God gave us the better covenant. The old covenant taught using physical commands to help them understand the spiritual, the new covenant speaks directly to our hearts so the old commands are obsolete.
I also believe the old testament is scipture and truth. I don't think it is right to criticize the Lord for giving commands that we are not obliged to keep with the new covenant, rather I think we are to learn from those commands. I also believe that our modern day church has labeled some of the commands obsolete that the Lord has not labeled osolete. However, I believe these are not important for our salvation, only that it would be to our good in our earthly living if we agreed with how the lord means scripture.
I am banking on that the Lord is with me as I study scripture, I cannot pretend to believe in such as criticizing the Lord's word. I believe in scripture, not the teaching that is only man teaching. I die to self every day, I live through Christ. 1 Corinthians 15 explains my beliefs better than I am doing.
So you never wear blended cloth? You know, rayon, acrylic or spandex? Or a cotton blend? Because that is the law. And he who fails to keep one law, is condemned for breaking one law. That is why the OT commands are finished. Even the Decalogue (10 Commandments) is rarely mentioned in the OT. Just twice! I'm not say they are bad rules. I think they give us a good direction in what to do. But, we are not condemned by breaking one. Because the law is obsolete! Here is ALL of Hebrews 8. It says the same thing in the whole chapter. The Old Covenant is done, obsolete! The New Covenant is not just better, but, Superior!
"Now the main point of what we are saying is this: We do have such a high priest, who sat down at the right hand of the throne of the Majesty in heaven, 2 and who serves in the sanctuary, the true tabernacle set up by the Lord, not by a mere human being.
3 Every high priest is appointed to offer both gifts and sacrifices, and so it was necessary for this one also to have something to offer. 4 If he were on earth, he would not be a priest, for there are already priests who offer the gifts prescribed by the law. 5
They serve at a sanctuary that is a copy and shadow of what is in heaven. This is why Moses was warned when he was about to build the tabernacle: “See to it that you make everything according to the pattern shown you on the mountain.” 6
But in fact the ministry Jesus has received is as superior to theirs as the covenant of which he is mediator is superior to the old one, since the new covenant is established on better promises.
7
For if there had been nothing wrong with that first covenant, no place would have been sought for another. 8 But God found fault with the people and said:
“
The days are coming, declares the Lord,
when I will make a new covenant
with the people of Israel
and with the people of Judah.
9 It will not be like the covenant
I made with their ancestors
when I took them by the hand
to lead them out of Egypt,
because they did not remain faithful to my covenant,
and I turned away from them,
declares the Lord.
10 This is the covenant I will establish with the people of Israel
after that time, declares the Lord.
I will put my laws in their minds
and write them on their hearts.
I will be their God,
and they will be my people.
11 No longer will they teach their neighbor,
or say to one another, ‘Know the Lord,’
because they will all know me,
from the least of them to the greatest.
12 For I will forgive their wickedness
and will remember their sins no more.”
13
By calling this covenant “new,” he has made the first one obsolete; and what is obsolete and outdated will soon disappear." Hebrews 8:1-13
You are wrong! The Old Covenant was for Jews, and because even God's chosen people could not keep it, God always had his real plan - the incarnation and atonement! Verse 9 above notes it was a worthless covenant, because he knew before creation that the REAL PLAN was Jesus. - crucified for our sins. Sacrificed for all of us, not just the Jews. He had this plan long before he called the Jews. The only real function of the Jews was never to create a permanent covenant with the Jews, based on the law. The law only foreshadows what is to come - and that is Jesus!! And the OT is about a blood line, for Jesus! Jesus is the purpose to reading the OT. I read the Old Testament a lot. I look for Jesus there, and I find him all the time. You seem to read the Old Testament and get side-tracked with the Law, instead of Jesus.
The whole Bible is the Revelation of Jesus, not just the last book of the Bible. The unveiling starts in Genesis 3. It continues with prophecies that point to Jesus, and the ancient Israelites knew the Messiah was the focus, although they did not recognize him when he came, because they were also too busy following their Law, and not seeing he was right there.
You are never going to convince anyone you are right. I know you love Jesus, but this extra-Biblical revelation you have is causing you to teach heresy. Be careful! Being half right is dangerous. You undermine the sovereignty of God and Christ, when you continue to live by the Law. You are actually disobedient to the Word, and to God, by not re-examining why you are wrong, repenting of it, and going in the right way.