That is really a good example of the confusion you are creating. Jews failed to follow their Messiah and the temple and their country was destroyed. Also, the New Testament reveals the fulfillment of the Old Testament prophecies and thus is a continuous writing that we call the Bible. The Sadducees and Pharisees were part of the corrupt system that God judged. They were judged because they were corrupting the knowledge of God. You cannot say that people holding to the corrupted knowledge of God are pleasing to God and of the same status as those who have become new creatures in Christ.The discourse of the New Testament is not the same of that of the Old Testament. That’s why Jews differ from Christians.
Within the Old Testament, the discourse of pre-exile documents is not the same of that of post-exlie. That’s why Saducees differ from Pharisees, or Jehova Witness differs from other Christians on the state of the dead.
Yet, all these different discourses are One in essence.
We baha’is believe in the unity of religions in essence.
Yes, pretty much like in the transfiguration.
Jesus is the Light of the World and you, my friend synergy, are the light of the world, so that others can see your good deeds and glorify the Father.
Therefore, the Father is glorified in you when you reflect the light of Christ, just as the Father was glorified in Christ when Christ Reflected his light.
Certainly this is all metaphorical language but I believe give us a pretty good idea of Bahá’u’lláh’s words.
Next there cannot be correspondence with Christ's teaching to that of Bahá’u’lláh, since Bahá’u’lláh does not recognize Christ's divinity and Christ's unique message to the world. That is pure contradiction. Christ died for our sins to reconcile us to God.