Christianity threw all Gods laws overboard, replaced it with paganism, introduces an extra man-god; the "son", and runs after a messiah who didn't fulfill the messianic prophecies.
Spoken like a good Pharisee, which you are, right?
Nobody threw God's laws overboard, the NT declares them holy and binding, and Jesus said He didn't come to abolish but to fulfill them and that every jot and tittle of the Hebrew writing would be fulfilled. I'm sure you are aware of that passage. He is the one who fulfilled the law, to perfection, because nobody born of the fallen human race is capable of obeying it to perfection, and perfection is required to qualify for God's presence, even the tiniest violation of the law being enough to condemn us for eternity. Because God is infinite and perfect and nobody can exist in His presence without His holiness. So Jesus, the Son of God, became a man in order to robe us in that holiness by paying for our sins against the Law through His own death as well as by obeying the Law to perfection. You think you can earn your way into God's presence but that is quite simply impossible for any human being. You fail all the time, every day, every hour, every minute, as we all do.
The identity of Jesus is revealed throughout the Hebrew scriptures, and He fulfilled every messianic prophecy though you strain yourself to deny it. I hope you may eventually come to recognize it.
What do you think "Kiss the Son" means in Psalm 2?
And then they think they are the new chosen people....
Well, not exactly. We have been "grafted" into the root of Abraham, so we are his adopted offspring, and one body with all the faithful Jews of the Old Testament, grafted into the Chosen People, not a new or separate chosen people, although some things did change when Jesus came.