Analysis of information sources in references of the Wikipedia article "Oral Torah" in English language version.
When the sages entered the vineyard at Yavneh, they said, "In the future there will be an hour when a person will search for a matter among the words of Torah and will not find it in, in the teachings of the scribes and will not find it. As it says, 'Behold, days are coming, says the Lord... they will seek out the word of God and they will not find it' (Amos 8:11-12). 'The word of God,' this is prophecy. 'The word of God,' this is [knowledge] of the eschaton. 'The word of God,' that one matter in the words of Torah is not similar to another." They said, "Let us begin from Hillel and Shammai."
