Salam Aleykoum,
I found some interesting material produced by a well known scholar of Hebrew, Sanskrit, and other ancient languages. He is a Writer and Researcher on comparative religion, Missionary and Debator of Islam.
I will quote some passage from Chapter 7 of his book (I think it's worthy of attention):
"The Spirit of Truth, or perfect truthfulness, or the perfection of truth from every point of view, is called pneuma tes aletheias in Greek and emet(h) in the Old Testament.23 The term emeth is derived from the root ’aman,24 that is to say, the Paraclete will be Amin, i.e., truthful from every point of view. And this was the name by which the Holy Prophet was well known among the people even prior to the Call. According to the Hebrew lexicon, the meaning of this term is ‘to be honest and truthful’, not only in money matters but in a much broader sense, as its significance is: faithfulness, trustworthiness, permanence, sureness and security. But its meaning as perfect truthfulness is commonly found in the Bible. From a linguistic and etymological point of view, emet(h) and Ahmad are parallel to each other. The Holy Prophet Muhammad alone revealed the whole truth about God, His unity and religion, and rectified the impious libels written and believed against His holy prophets. In Jewish scriptures, emet(h) is called the seal of God. According to the Prophet Daniel, the seal of God is the book or scripture of truth.25 In the same book, the emet(h) spoken of is apparently the religion of God. In respect of emet(h) the prophet David has sung:
“O Lord, who shall sojourn in thy tent? Who shall dwell on thy holy hill? He who walks blamelessly, and does what is right, and speaks truth [emet(h)] from his heart; who does not slander with his tongue, and does no evil to his friend, nor takes up a reproach against his neighbour; in whose eyes a reprobate is despised, but who honours those who fear the Lord; who swears to his own hurt and does not change; who does not put out his money at interest,
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23. “Truth is the first of all perfections. The Hebrew word for truth is Emeth. It is composed of three letters: Aleph, Mem, and Thaw. The Aleph and the Thaw are the first and last letters of the Hebrew alphabet … Thus the term Emeth (truth) begins with the first letter of the alphabet and ends with the last. This led the Jewish sages to find in this word a mystical meaning.” — The Catholic Encyclopaedia, edited by Charles G. Herbermann and others, New York, 1907, art. ‘Alpha and Omega’. 24. The original form of emet(h) is amint, which then changed in pronunciation to emet(h). 25. Daniel, 10:21.
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and does not take a bribe against the innocent. He who does these things shall never be moved.” 26
These aspects of emet(h) are corroborated in Isaiah.27 The part of the verse in Zechariah:
“… render in your gates judgments that are true and make for peace” 28
reads literally:
“Truth [emet(h)] and judgment of peace [shalom] judge within your gates”
which may be interpreted as follows: “Ahmad will judge with justice and bring Islam to your gates”. Emet(h) is eulogized by the name Ma‘et in ancient Egyptian religion, and Ma‘et has frequently:
“a purely intellectual connotation; it then means ‘truth’.” 29
It is also written:
“Maat was the goddess of truth.” 30
By designating him as pneuma tes aletheias or ‘Spirit of Truth’, Jesus did not give a sign of the promised Paraclete like the sign that he shall be born without the agency of a human father, or that wise men from the East shall come to worship him, or that he shall walk on water, or that he shall change a sta into a serpent, or that, spitting into someone’s mouth, he shall restore his power of speech.31 However wonderful and strange be these works, they are all the same impermanent and transitory. The greatest attribute of the Holy Prophet is to be the ‘Spirit of Truth’ (pneuma tes aletheias), an embodiment of righteousness and truth, fidelity, sincerity, punctuality in keeping promises, and teaching true doctrines. Another argument that emet(h) is Ahmad is that there is a tradition of the Jews relating that some righteous men of the temple implored the Most High God to banish Satan, who was the root cause of all sin and suffering, bag and baggage from the world. Upon this a wrapped-up book descended
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26. Psalms, 15:1–5. 27. Isaiah, 33:15. 28. Zechariah, 8:16. 29. Encyclopaedia of Religion and Ethics, Edited by James Hastings, art. ‘Ethics and Morality (Egyptian)’, vol. 5, p. 475. 30. Ibid., art. ‘Egyptian Religion’: 40. Abstract gods, vol. 5, p. 249. 31. Mark, 7:33; John, 9:6.
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from heaven on which was written ‘Truth’ (emeth). Thereafter a lion of fire came out of the temple and ran away. It was idolatry and polytheism which had abandoned the earth.32 In this connection, it is written in the Catholic Encyclopaedia, quoting the Jewish Encyclopedia:
“This legend shows that the seal of God is truth.” 33
In the New Catholic Encyclopedia, the meaning of emeth is given as follows:
“aleph-mem-tau = ’eˇmet, truth or fidelity” 34
This scripture of truth is the Holy Quran, in several verses of which it has been called ‘the Truth’. For instance, “Say: The Truth has come and falsehood vanished.” And it came to pass accordingly when the Holy Prophet, after the conquest of Makka, entered the Ka‘ba and smote every idol with his stick, reciting this verse:
“And say: The Truth has come and falsehood vanished. Surely falsehood is ever bound to vanish.” 35
The idols fell down broken into pieces, and Satan came out of the Ka‘ba and ran away from the whole of Arabia for ever. Whatever Jesus is reported to have said regarding the promised Paraclete, he must have spoken not in Greek, but in the language of the Jewish scriptures, and the word spoken could only be emeth (Ahmad), for this term is very widely known among the Jews and is regarded as a word of secret power, the recital whereof drives away all di culties and troubles. In emet(h), which is a mystic syllable, there are three letters, A-M-T. According to the Hebrew script, A or aleph is the first letter, T or taw is the last, and M or mem is the middle one. These three letters in a way predominate and prevail over the entire Hebrew alphabet, just as we say in English “from A to Z”. The Jews call it emet(h). But from another point of view, emet(h) was not a meaningless term. It means ‘Truth’ or ‘all in all Truth’, an anthology of virtues, i.e., Praised One or Ahmad.
(Muhammad in World Scriptures by Maulana Abdul Haq Vidyarthi, Vol 1, pp. 389-391)
