The word inspiration is used twice in the KJV as far as I can find once by Elihu in the old testament, and once by Paul in the new testament.
Job 32:8 But [there is] a spirit in man: and the inspiration of the Almighty giveth them understanding. ( it is the spirit* in a man, the breath of the Almighty, that gives him understanding.)
Job 32:9 Great men are not [always] wise: neither do the aged understand judgment.
Job 32:10 Therefore I said, Hearken to me; I also will shew mine opinion.
Job 32:18 For I am full of matter, the spirit within me constraineth me
We know that Elihu is not talking about the holy ghost/comforter, because it was not given as of then.
2Ti 3:16 All scripture [is] given by inspiration of God, and [is] profitable for doctrine, for reproof, for correction, for instruction in righteousness:
This is the information given Timothy, by Paul.keeping within context of the conversation leading up to this, we see Paul could have only been talking about Old Testament scripture.
2Ti 3:14 But continue thou in the things which thou hast learned and hast been assured of, knowing of whom thou hast learned [them];
2Ti 3:15 And that from a child thou hast known the holy scriptures, which are able to make thee wise unto salvation through faith which is in Christ Jesus.
Since the New Testament was not yet in print,when Timothy was a child, we know Paul was speaking of Old Testament holy scriptures. It would be hard to make the jump that Paul was including any writings that came after his speaking to Timothy.
The word scripture appears 32 times in the KJV all 32 times refer to old testament scripture written by the prophets inspired/moved by God.
Let's look at what Peter said about scripture.
2Pe 1:20 Knowing this first, that no prophecy of the scripture is of any private interpretation.
2Pe 1:21 For the prophecy came not in old time by the will of man: but holy men of God spake [as they were] moved by the Holy Ghost.