We really do not have any original scriptures of any religions prior to the Baha’i Faith and that is part of the problem, so all we can do is read what most likely to be the sayings of those Prophets/Messengers. Buddhists have the Sutras, Hindus the Gita, Jews the Torah, Christians the Bible, Muslims the Qur’an, etc.
That is narrow minded - the holy book of the Sikhs was
dictated by the fifth Master himself. Due to a misunderstanding the 10th Master was not provided a copy and he dictated it again from memory reprising the original - the two copies were composed about a century apart and are still present today for a word by word comparison. What I am seeing, with due respect is that the Ba'hai writings are a regurgitation of what has come before. There is no originality to be claimed here. I can quote you chapter and verse of where the prior material composed centuries or eons prior was present.
Even that statement that was made elsewhere "Do not refer to me as God - those who do will go to hell" or some such....is present in a near word for word fashion in the writings of the 10th Master
ਜੋ ਹਮ ਕੋ ਪਰਮੇਸੁਰ ਉਚਰਿ ਹੈ ॥
Jo Hama Ko Parmesur Auchari Hai ॥
ਬਚਿਤ੍ਰ ਨਾਟਕ ਅ. ੬ - ੩੨/੧ - ਸ੍ਰੀ ਦਸਮ ਗ੍ਰੰਥ ਸਾਹਿਬ
ਤੇ ਸਭ ਨਰਕਿ ਕੁੰਡ ਮਹਿ ਪਰਿ ਹੈ ॥
Te Sabha Narki Kuaanda Mahi Pari Hai ॥
Whosoever shall call me the Lord, shall fall into hell.
ਬਚਿਤ੍ਰ ਨਾਟਕ ਅ. ੬ - ੩੨/੨ - ਸ੍ਰੀ ਦਸਮ ਗ੍ਰੰਥ ਸਾਹਿਬ
ਮੋ ਕੋ ਦਾਸੁ ਤਵਨ ਕਾ ਜਾਨੋ ॥
Mo Ko Daasu Tavan Kaa Jaano ॥
ਬਚਿਤ੍ਰ ਨਾਟਕ ਅ. ੬ - ੩੨/੩ - ਸ੍ਰੀ ਦਸਮ ਗ੍ਰੰਥ ਸਾਹਿਬ
ਯਾ ਮੈ ਭੇਦੁ ਨ ਰੰਚ ਪਛਾਨੋ ॥੩੨॥
Yaa Mai Bhedu Na Raancha Pachhaano ॥32॥
Consider me as His servant .
ਬਚਿਤ੍ਰ ਨਾਟਕ ਅ. ੬ - ੩੨/(੪) - ਸ੍ਰੀ ਦਸਮ ਗ੍ਰੰਥ ਸਾਹਿਬ
ਮੈ ਹੋ ਪਰਮ ਪੁਰਖ ਕੋ ਦਾਸਾ ॥
Mai Ho Parma Purkh Ko Daasaa ॥
ਬਚਿਤ੍ਰ ਨਾਟਕ ਅ. ੬ - ੩੩/੧ - ਸ੍ਰੀ ਦਸਮ ਗ੍ਰੰਥ ਸਾਹਿਬ
ਦੇਖਨਿ ਆਯੋ ਜਗਤ ਤਮਾਸਾ ॥
Dekhni Aayo Jagata Tamaasaa ॥
I am the servant of the Supreme one and hath come to see the Sport of the world.