What does the bible say—
Jer 8:8 How do ye say, We [are] wise, and the law of the LORD [is] with us? Lo, certainly in vain made he [it]; the pen of the scribes [is] in vain (falsehood).
Who are the scribes—?
In this particular verse, they are the scribes of the prophets. They write everything as dictated to them by the prophets.
An example of a scribe of a prophet:
Jer 36:32 Then took Jeremiah another roll, and gave it to Baruch the scribe, the son of Neriah; who wrote therein from the mouth of Jeremiah all the words of the book which Jehoiakim king of Judah had burned in the fire: and there were added besides unto them many like words.
Baruch is Jeremiah’s scribe same thing with the particular scribes of Jer 8:8. They were scribes to prophets. The only difference is they were scribes to false prophets. During those times wherein Israel is rebellious they heed to false prophets. It was mainly from prophets that pollution of religion comes out thus the scribes writing falsely and claiming it to be the law of God is directed by the initiatives of the prophets.
Jer 23:15 for from the prophets of Jerusalem is profaneness gone forth into all the land.
What the scribes wrote as directed to them by the prophets were from the imagination of their hearts and then claiming it as spoken by God.
Jer 23:31 Behold, I [am] against the prophets, saith the LORD, that use their tongues, and say, He saith.
What the prophets say were his own words—fundamental of what the scribes wrote which qualifies it as allegedly new revelations. Clearly they were not altering any existing biblical scriptures.
Jer 23:16 Thus saith the LORD of hosts, Hearken not unto the words of the prophets that speak unto you: they make you vain: they speak a vision of their own heart, [and] not out of the mouth of the LORD.
What the prophets revealed were from their own words thus they were making new statements apart from the already existing biblical manuscripts—
Thus they were inventing their own revelations which the scribes wrote and were accepted by the people as the law of the Lord but actually were in falsehood. As we can see, they were not altering or corrupting any existing biblical manuscripts but only relating to the people new messages which are fundamentally lies.
Could we find any of such in the realm of Judaism?
THE TALMUD—it probably speaks about it.
The corruption of the bible is clearly not outlined in Jer 8:8. It was not a reality during Jesus time bec even Jesus himself attested of the preservation of biblical scriptures.
Jn 5:39 Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me.
Lk 24:44 And he said unto them, These [are] the words which I spake unto you, while I was yet with you, that all things must be fulfilled, which were written in the law of Moses, and [in] the prophets, and [in] the psalms, concerning me.
During the era of early Christianity, Jesus invigorated the searching of the scriptures—and thereby revealed the preservation of biblical scriptures such as the law of Moses, The Psalms of David and the books of the Prophets (Isaiah—Malachi). The corruption of the bible is not reality during these times.
God promised the preservation of his words.
Ps 12:6 The words of the LORD [are] pure words: [as] silver tried in a furnace of earth, purified seven times.
Ps 12:7 Thou shalt keep them, O LORD, thou shalt preserve them from this generation for ever.
It even elaborated the cumulative gathering of the preserved books—
Isa 34:16 Seek ye out of the writing of the LORD, and read: no one of these shall fail, none shall want an additional one for my mouth it hath commanded, and his spirit it hath gathered them.
As promised, that writing of the lord was fulfilled with no other than the biblical manuscripts—it can be known through its definitive process the bible said as “gathered” and its distinction “none shall want additional one”. The bible was gathered never wanting additional religious books thus all correct texts contained in it has been sealed with the promise, it will be called the writing of the lord which is a sign of divine approval and preservation.
With this prophecy, the reality of biblical corruption as Muslims misinterpreted Jer 8:8 is not at all insinuated—it was actually debunked!
The bible was meant for all generations to come so how come its corrupted?
But thou, O LORD, shalt endure for ever; and thy remembrance unto all generations.
Ps 102:18 This shall be written for the generation to come: and the people which shall be created shall praise the LORD.