Criticism and investigation

According to religious term, religion is the collection of rules, regulations and customs under which the human being can approach God and be prosperous in two worlds and step in the right path.

The source of all these differences isn’t from ignorance but from being deviated from right path and exercising personal views:

"وَمَا تَفَرَّقُوا إِلَّا مِنْ بَعْدِ مَا جَاءَهُمُ الْعِلْمُ بَغْيًا بَيْنَهُمْ..."  ]شوری/14[

“And they didn’t become divided united after knowledge had come to them out of envy among themselves; and had not a word gone forth from your Lord till an appointed term…” [Al-Showra/14]

If people; particularly, scientist let bigotry, hostility, personal interests and violating limitations and rights aside and investigate God’s commandments by realism and justice seeking spirit, they will observe the right road bright and differences will be quickly solved. So, the Almighty God states:

"وَمَا اخْتَلَفَ الَّذِينَ أُوْتُواْ الْكِتَابَ إِلاَّ مِن بَعْدِ مَا جَاءهُمُ الْعِلْمُ بَغْيًا بَيْنَهُمْ" [آل‌عمران/19]

“…and those to whom the book had been given did not show opposition but after knowledge had come to them, out of envy among themselves…” [Al-Imran/19]

Based on perfection principle, the last religion is the most perfect. We after to the holy Quran concerning unity as the basis of divine religions:

"قُولُوا آمَنَّا بِاللَّهِ وَ ما أُنْزِلَ إِلَيْنا وَ ما أُنْزِلَ إِلي‏ إِبْراهيمَ وَ إِسْماعيلَ وَ إِسْحاقَ وَ يَعْقُوبَ وَ الْأَسْباطِ وَ ما أُوتِيَ مُوسي‏ وَ عيسي‏ وَ ما أُوتِيَ النَّبِيُّونَ مِنْ رَبِّهِمْ لا نُفَرِّقُ بَيْنَ أَحَدٍ مِنْهُمْ وَ نَحْنُ لَهُ مُسْلِمُونَ" [بقره/136]

“Say: We believe in Allah and (in) that which had been revealed to us, and (in) that which was revealed to Ibrahim and Ismail and Ishaq and Yaqoub and the tribes and (in) that which was given to the prophets from their Lord, we don’t make any distinction between any of them, and to Him do we submit.” [The Cow/ 136]

And also the verses 13-14 of the-Showra chapter of the holy Quran say:

"شَرَعَ لَکُم مِّنَ الدِّینِ مَا وَصَّی‏ بِهِ نُوحاً وَالَّذِی أَوْحَیْنَآ إِلَیْکَ وَمَا وَصَّیْنَا بِهِ إِبْرَاهِیمَ وَمُوسَی‏ وَعِیسَی‏ أَنْ أَقِیمُواْ الدِّینَ وَلَا تَتَفَرَّقُواْ فِیهِ کَبُرَ عَلَی الْمُشْرِکِینَ مَا تَدْعُوهُمْ إِلَیْهِ اللَّهُ یَجْتَبِی إِلَیْهِ مَن یَشَآءُ وَیَهْدِی إِلَیْهِ مَن یُنِیبُ‏" [الشوری/14-13]

“He has made plain to you of the religion what He enjoyed upon Nuh and that which We have revealed to you and that which We enjoyed upon Ibrahim and Musa and Isa that keep to obedience and be not divided therein; hard to the unbelievers is that which you call them to; Allah chooses for Himself him who turns (to Him), frequently.” [Al-Showra/ 13-14]

According ti the holy Quran and the holy prophet (P.H.), Islam is the last divine creed; because the prophets of God were the very teachers who trained the humane community in a class:

"إِنَّ الدِّينَ عِنْدَ اللَّهِ الْإِسْلامُ وَ مَا اخْتَلَفَ الَّذينَ أُوتُوا الْکِتابَ إِلاَّ مِنْ بَعْدِ ما جاءَهُمُ الْعِلْمُ بَغْياً بَيْنَهُمْ وَ مَنْ يَکْفُرْ بِآياتِ اللَّهِ فَإِنَّ اللَّهَ سريعُ الْحِسابِ" [آل عمران/19]

“Surely, the (true) religion with Allah is Islam, and these to whom the Book had been given did not show opposition but after knowledge had come to them, out of envy among themselves; and whoever disbelieves in the communications of Allah then surely Allah is quick in reckoning.” [Al-Imran/ 19]

Eventually, the issue of oneness of religions isn’t innovated by Baha’ism; but the religion of Islam has investigated it 1400 years ago and has explained it completely.