>>9908590
You are asking to prove a negative.
The sauce is whatever the Apostles left in writing, and that was not included. This is why John left anyone adding to their doctrine, a curse:
9 Whoever transgresses and does not abide in the doctrine of Christ does not have God. He who abides in the doctrine of Christ has both the Father and the Son.
10 If anyone comes to you and does not bring this doctrine, do not receive him into your house nor greet him;
11 for he who greets him shares in his evil deeds. 1 John
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John called it a "transgression" to not "abide" by their doctrine, which they wrote, like this particular letter.
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All such transgressing that doctrine, DO NOT HAVE GOD.
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Only those abiding by that Doctrine, have the Father and the Son.
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Those in the Father and the Son are not to receive anyone bringing anything different from what their Doctrine.
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Even greeting them, which involved a blessing, is sharing in their transgression.
Any group saying these Doctrines, recorded faithfully, are not the only source of inspiration, make such claims because the Apostles never taught what they are claiming.