The previous mention of the Gnostics was just away of showing the problems of people slinging around terms like "man made", especially on subjects that they likewise profess to not know much about.
And I only say this because of all the stuff I've personally seen coming out of the Charismatic movement.... where certain "anointed" ministers could eschew things like like Theology, and Church history, meanwhile preaching their own homebrewed teaching which wasn't always so orthodox (although usually they had the sense to not stray to far from historic Christianity).
Besides which
@Freedm there can be a certain paradoxical irony.... Essentially much of the preaching on "By the Spirit" vs. "Man Made" or by tradition etc. really comes out of the Jesus movement, or some other sub movement of Pentecostalism, or the Charismatic movement, and depending on terminology etc. you might be able to trace certain things to a specific preacher like a Ken Hagin, Rick Joyner, etc. (An idiosyncratic teaching, unique to the person)
There also is a lot of irony if you actually study the history of the Bible, Church history etc.
Very little in the Bible came purely from God. The 10 Commandments for instance were written directly by the hand of God into stone, and the same with that one little message in the book of Daniel, MENE, MENE, TEKEL, UPHARSIN.
But everything else in the Bible comes by way of humanity... It is either God inspiring prophets, or some inspired oral tradition that is committed to paper centuries later, or books and letters written by an inspired apostle etc. And when you get into the actual topic of Canonization of the Bible, you get into something similar. That was not something that came directly by the hand of God, nor was it brought by an angelic messenger etc.
Anyway when it comes to our basic understanding of Christian Theology and doctrine we should not treat it with contempt; because, it is God's will that He works through humanity to do his Will and to build His Church.