The second question concerneth the blessed verse of the Furqan [Qur’an], in which He, exalted be His station and transcendent be His sovereignty, saith: ‘And when Jesus son of Mary said: O Children of Israel! Lo! I am the messenger of Allah unto you, confirming that which was before me in the Torah, and bringing good tidings of a messenger who cometh after me, whose name is Most Praised [Ahmad]. Yet when he hath come unto them with clear proofs, they say: This is mere magic.’ [Qur’an 61:6]
You imply by the question that this passage hath never existed in the Gospel, even though the Messenger of God (blessings be upon him) mentioned it in the Furqan. Yea, we acknowledge this truth. However, his holiness did not say it was revealed in the Gospel. Verily, we bear witness that he said Jesus son of Mary spoke in accordance with what the All-Merciful revealed in the Furqan, and of course what he said and what the All-Merciful revealed in the Furqan hath been and shall ever be the pure truth, for none but God knoweth the hidden knowledge and comprehendeth what hath happened and what will happen in creation. God, exalted be He, revealeth and teacheth what He wisheth to His chosen ones and His prophets. Verily, He is the Knowing, the Wise.
This blessed revealed verse is one of the matters which God, exalted be He, disclosed to His Messenger. Although it is not in the Gospel, this is not proof that his holiness Christ did not say the verse, inasmuch as the four gospels–Matthew, Mark, Luke, and John–were written after that holy personage. After Christ, these four individuals wrote statements from his holiness that they saw so that his followers would busy themselves with reading and contemplating them. There are many of his statements which they did not see and many words he spoke which they did not hear. None knoweth what he said save the One who sent him, educated him, and aided him. God alone, exalted be His knowledge, knoweth all things, and He is the Omniscient, the All-Encompassing, the ِAll-Knowing, the All-Powerful. Every atom testifieth that His knowledge encompasseth all things and surroundeth all creation. He, verily, is the Peerless, the Incomparable, the Omnipotent, the Resplendent, the All-Knowing, the All-Informed.
The Most Exalted Pen saith: In every dispensation, God, magnified be His glory, confirmeth His books that He revealed previously. The Messenger, may the spirits of all others be his sacrifice, confirmed the Torah and the Gospel. Likewise, in this dispensation is confirmation of the Furqan and other holy books. However, the Torah that God hath accepted is the same words that issued from Him through the tongue of the Speaker (Moses). This matter hath been mentioned briefly. If God, magnified be His glory, desireth, a more detailed explanation will flow from the Most Exalted Pen.
Baha’u’llah through his secretary Khadim Allah, quoted in Khavari, Muhadarat 1:365. Christian missionaries in Baha’u’llah’s day criticized the Qur’an for asserting that Jesus alluded to Muhammad, whose name derives from the same root as “Ahmad” mentioned in the verse. As for the nature of the true Torah, Abdu’l-Baha similarly says that the Torah is the words God spoke to Moses, which he identifies as the ten commandments.