I do not think the "wholly human and wholly divine" doctrine is in the Bible. It is part of the Nicean Creed, so that dates back to the 4th Century (say 312AD or so).
The Gnostics were influenced by the Manacheans, who held that Matter was evil, and Spirit was good. G-d being Spirit could never have created the evil material world.
To get around this, they had a number of intermediate powers, like a layer cake gone mad! Each was good enough so the better would not be too offended at creating it, and bad enough that it would not be against its nature to create a slightly lower caste demi-g-d below it. Of course none of this is in the Bible, so they claimed a secret doctrine that was passed down outside the Scripture.
The other notion of the Gnostics was that the Gospel of Mark was a cover story, which with word play and allegory presented a secret: That the mushroom "aminita muscaria" or fly agaric, could be prepared, consumed, and would give one hallucinations which would be interpreted as direct contact with divinity. This last notion was promulgaged by John Allegro in his book "The Sacred Mushroom and the Cross". JA was one of the translators for the Revised Standard Version, but was also a bit of a crank.
The secret recipe: break up the "body" of the mushroom into pieces, and soak it in the "blood" aka wine for 3 days. Then consume a piece of the mushroom, with the wine. Result: Guaranteed to see sounds and hear colors for several days.
You see the parallel to the last supper; "This is my body, broken for thee". This is my blood, shed for thee.
The appearance of the mushroom when ready to collect is of a large phallus stabbing into a large genital organ.
I promise, you couldn't make this stuff up.
After putting the mushroom into the wine does it become a rightous shroom dude?
Just kidding I use to eat shrooms and buttons in my day and they never lasted several days and I never saw the devine, and I'm not talking a head buzz either. I grew up in the late 60-70's have done over 1,000 trips and when we use to trip we saw walls melt. The only thing that lasted close to 3 days was STP did it only once, cause that was the only chance I had to do it.
Been clean and saved 20 years Aug. 10 of this year. It was a pure deliverance salvation, no withdrawls no desire to do it ever again.