Bahaullah had written that All religions of the world, except for a few, are from God:
"There can be no doubt whatever that the peoples of the world, of whatever race or religion, derive their inspiration from one heavenly Source, and are the subjects of one God. .... All of them, except a few which are the outcome of human perversity, were ordained of God, and are a reflection of His Will and Purpose."
Abdulbaha farther elaborated the Words of Bahaullah in more details and had said:
"Blessed souls—whether Moses, Jesus, Zoroaster, Krishna, Buddha, Confucius or Muḥammad—were the cause of the illumination of the world of humanity. How can we deny such irrefutable proof? How can we be blind to such light? How can we dispute the validity of Christ? This is injustice. This is a denial of reality. Man must be just. We must set aside bias and prejudice. We must abandon the imitations of ancestors and forefathers. We ourselves must investigate reality and be fair in judgment."
IT, this is all just regurgitation of the Baha'i party line, and we've heard it a lot. Do you even bother to read what I say, or are you content firing off random quotes from your prophet, and his son? Or perhaps you have something new to add to the argument?
Again ... (alas) You are welcome to your beliefs. It just so happens that I don't believe in them. Neither do most of the rest of the people on this planet. There is absolutely no proof besides Baha'u'llah said so. I'm sorry, but that's not proof to anyone but Baha'i's. Why can't you just call it your belief, rather than state it as a fact? I know that's a big step, but that's what most folks do, even some of your Baha'i' friends on this thread.
Your idea of investigation is logically and scientifically flawed. It goes so far as to read the words of one individiual who claimed he knew everything, and then believe him. That's not investigation at all.
in·ves·ti·gate
inˈvestəˌɡāt/
verb
verb: investigate; 3rd person present: investigates; past tense: investigated; past participle: investigated; gerund or present participle: investigating
carry out a systematic or formal inquiry to discover and examine the facts of (an incident, allegation, etc.) so as to establish the truth.
"police are investigating the alleged beating"
synonyms: inquire into, look into, go into, probe, explore, scrutinize, conduct an investigation into, make inquiries about; More
inspect, analyze, study, examine, consider, research;
informalcheck out, suss out, scope out, dig, get to the bottom of
"police are still investigating this apparent murder"
- carry out research or study into (a subject, typically one in a scientific or academic field) so as to discover facts or information.
"future studies will investigate whether long-term use of the drugs could prevent cancer"
synonyms: inquire into, look into, go into, probe, explore, scrutinize, conduct an investigation into, make inquiries about; More
inspect, analyze, study, examine, consider, research;
informalcheck out, suss out, scope out, dig, get to the bottom of
"police are still investigating this apparent murder" - make inquiries as to the character, activities, or background of (someone).
"everyone with a possible interest in your brother's death must be thoroughly investigated"
synonyms: inquire into, look into, go into, probe, explore, scrutinize, conduct an investigation into, make inquiries about; More