We need not here take into consideration how many of Jesus' expressions may have been imported into the Gospels from the Mystery drama, with whose existence we must nevertheless reckon, and from which phrases may have been changed into sayings of the "historical" Jesus. Such obscure and high-flown passages as, e.g., Matt. x. 32 sq.; xi. 15-30, xxvi. 64, and xxviii. 18, give one the impression of coming from the mouth of God's representative on the stage; and this probability is further increased when we meet quite similar expressions, such as of the "light burden" and the "easy yoke," in the Mysteries of Mithras or of Isis. [469] Bousset admits that all the individual words which have been handed down to us as expressions of Jesus are "mediated by the tradition of a community, and have passed through many hands." [470] They are, as Strauss has observed, like pebbles which the waves of tradition have rolled and polished, setting them down here and there and uniting them to this and that mass. "We are," Steck remarks, "absolutely certain of no single word of the Gospels--that it was spoken by Jesus just in this way and in no other." [471] "It would be very difficult," thinks Vollers, "to refer even one expression, one parable, one act of this ideal man to Jesus of Nazareth with historical certainty, let us say with the same certainty with which we attribute the Epistle to the Galatians to the Apostle Paul, or explain the Johannine Logos as the product of Greek philosophy." [472] Even one of the leaders of Protestant orthodoxy, Professor Kähler, of Halle, admitted, as was stated in the "Kirchliche Monatsblatt für Rheinland und Westfalen," in a theological conference held in Dortmund, that we possess "no single authentic word" of Jesus. Any attempt, such as Chamberlain has made, to gather from the tradition a certain nucleus of "words of Jesus," is consequently mistaken; and if nothing is to be a criterion but one's personal feelings, it would be better to confess at once that here there can be no talk of any kind of decision.