"No distinction do We make between any of His Messengers." For they, one and all, summon the people of the earth to acknowledge the unity of God,
Jesus is the Son of God. Jesus is "the way, the truth, and the life. No one comes to the Father except through Me," Jesus says, in John 14:6. So, our Creator and Father's true unity is in Jesus, not only in some unity of beliefs and practices. God is personal - - - Father and Son and Holy Spirit > in family caring and sharing love. And man in God's image is a family being with more than one family person, but mankind has fallen from loving as one family!
So, in Jesus we are redeemed and corrected and cured and matured to love as God's family > we are talking about unity in family caring and sharing love, as the scriptures do emphasize in the New Testament. So, the unity of God's children is rooted in God's own love >
"Now hope does not disappoint, because the love of God has been poured out in our hearts by the Holy Spirit who was given to us." (Romans 5:5)
"Confucius" by the way is not considered a Manifestation of God or a "Prophet" by Baha'is. He is considered a reformer who "...renewed morals and ancient virtues.."
I think I understand that you mean that acknowledged Bahá'í prophets and reformers each could introduce or renew more than Bahá'í believers have already been ready to accept.
But we acknowledge Jesus as being God's own Son, with whom our Father is so pleased that He has predestined His children "to be conformed to the image of His Son, that He might be the firstborn among many brethren." (in Romans 8:29)
So, God is not only interested in worship and unity of beliefs and practices, but our Heavenly Father desires to have children who are pleasing and delighting to Him like Jesus is. This is part of why Jesus started the "Sermon on the Mount" with how-to-be things, in the "Beatitudes". Therefore, Jesus is all that God is about, for all that is truly good . . . not only reforming or adding, but conforming us to how His own Son is, and how Jesus in us has us submitting to our Father while loving one another and any and all people.
"....the spirit and attributes of divinity are mirrored in a new messenger and manifestation of God. Each revelator reveals as much revelation as the faithful are ready to receive."
I think you have made this clear.
But in Jesus we are already in the One who already has it all. As we grow in Him we more and more discover God . . . each of us personally. "My little children, for whom I labor in birth again until Christ is formed in you," (Galatians 4:19) Jesus in us is all how God is, sharing how He is with us > we come to know how Jesus is, by becoming loving of any and all people, ourselves, in sharing with Him in us > Galatians 2:20. This is as much as each of us is "one spirit with Him." (1 Corinthians 6:17) This comes with growing, along with how our Heavenly Father personally corrects each of us > Hebrews 12:4-11, 1 John 4:17.
So God is this personal with every one who is His child > "But if you are without chastening, of which all have become partakers, then you are illegitimate and not sons." (Hebrews 12:8) God's chastening brings this result, not only guilt-tripping and reform and changing behavior and policies.
the attempt which irresponsible followers of the Faith made on the life of the Shah.
Now, I think you have indicated that Bahá'u'lláh was Arab. And it seems ones of Arab groups of Islam had problems with Bahá'í people. So, to me this sounds like the kind of problem which Arabs of different religious commitments have had with one another, in their history, so that they have had various violent confrontations. And I understand that Jews have at different times in history been violently involved with Arabs > Jews and Arabs are related by being Semites, I understand; so I consider they and Arabs could be sibling rivals.
But Peter, even though he was a disciple of Jesus, used a sword to attack a man while the Jews came to arrest Jesus. And we see how in history ones claiming to be Christian have done various violent things which did not represent Jesus. But >
"Love does no harm to a neighbor," we have in Romans 13:10.
But Bahá'u'lláh does make it clear the assassins were "irresponsible".
@Arthra But, Arthra . . . "irresponsible" does not necessarily mean doing what is evil. So, do you consider that "irresponsible" could be an understatement? Or, maybe in Arab it has a much stronger meaning, more like "evil".
And ones who favor Peter might say he was only "misguided". But we see how Peter, even after he had received the Holy Spirit, was even able to betray the Holy Spirit and the Gentile Christians whom the Holy Spirit had adopted > Galatians 2:11-13. So, we have had times when even our esteemed and God-approved leaders have done evil.
But, in any case, "Love does no harm to a neighbor". So, what matters is if we have found out how to love. Morals and beliefs alone can not make us able to love the way God desires. We need how God in us personally changes us and corrects us and cures our nature in His love. But the Bible has various writings about how to be pleasing to God, and how to be and relate in His love. This we have now. But this is all meant for how God does in us all He means by His word (Philippians 2:13)

It is not do-it-ourselves discipline. In His love we have all that is of God's own nature >
"Love has been perfected among us in this: that we may have boldness in the day of judgment; because as He is, so are we in this world." (1 John 4:17)
However, our Father includes us to help each other with this > Ephesians 4:14-15 < we all help each other; each of us is able to minister God's own grace, which includes however He favors us, plus how His love effects our nature and how in His peace (Colossians 3:15) we are personally guided "continually" (Isaiah 58:11) > 1 Peter 4:9-10 shows that each child of God has power to minister God's own grace.
So, this goes beyond only having revelations and reforms which humans might be capable of evaluating. God Himself in us is personal with each of us who are His children . . . now

And He in us is our Example of how to be and how to love. And now His Holy Spirit corrects and grows and matures each of us.
So, this means that various religions are indeed incomplete, compared with who and how Jesus is and how He shares with us, in us.
But God has overall management of this world's people and religions. So, there is already unity in God's overall control of things, but it is not all of God's approval, but of His control for His purpose. He is keeping this evil world in some sort of order, by how wrong people specialize in different groups and having various national and other identities . . . but all while our Father is adopting ones to become His children with His Son Jesus.
Jesus is the One who suffered and died for us, and rose on the third day. This is not only a practice or belief, but what God has taken action to do to redeem us. And He is still so very busy ! ! !
