Thanks so much for answering!
We are still on the same page but the words are interpreted a bit differently. Everything is the same up until interpreting what the OT means to us. I think the Lord, being eternal, gave us Christ at the time Adam fell but Christ's full power was withheld with our kind of time. For those 4,000 years, the sacrificial system was used the same way that Christ is used, but not as well. I base that on Matt. 27: 51 At that moment the curtain of the temple was torn in two from top to bottom. The earth shook, the rocks split 52 and the tombs broke open. The bodies of many holy people who had died were raised to life. 53 They came out of the tombs after Jesus’ resurrection and went into the holy city and appeared to many people. In the OT death is spoken of as sleep, now it means eternal life. So I think that the sacrificial system and Christ are closely connected, with each explaining the other.
When I read the term OT law, to me it hasn't meant the part of the sacrificial system that is gone with Christ but God's eternal laws that operates our world. The law that 119th Psalm is speaking of, so you are speaking of oranges and I am responding to apples.
When you speak of Christ fulfilling the law it means something entirely different to each of us. I think that when we take our sins to Christ with repentance in our hearts that they are completely wiped out, and that fact fulfills what was spoken of Christ before. But sin is still sin and sin still means death. I never could wrap my head around what fulfilling the law means to the present day church, but it doesn't mean to them that Christ is the answer to all spoken of Him and Christ fulfilled all of it as I feel so certain is what God meant when God told us about fulfilling.
It seems to me that we need to know about what animal blood did, and we need to know about the duties of the levi Priests, not because they are still in effect but they give us an understanding of the more perfect way those things are done, now. I don't think we truly understand God's ways and principles unless we first understand God at creation and explained in the OT. I think God's ways are eternal, and we have all of that only better.
So I think that perhaps the Mesianic Karaite Jew might be one up on us because of his background of learning God's eternal laws first.