Bero (Or Beron)
was a Valentinian heretic of the 3d century, who admitted two natures by confusion in our blessed Lord, but only one operation. He maintained that the divinity was passible, and the humanity capable of the same operations as the Word. This opinion compelled him to maintain also that the Word was made man by a change of his divinity into.the nature of man, and that the man had been made God by a change of his humanity into the nature of God. St. Hippolytus refuted this heretic and his followers in his book, On the Divinity and Incarnation of Jesus Christ, against Bero and Helico (or Helice). See Caisius, Lect. Antiq. 5; Ceillier, Hist. des Aut. Eccles. 2, 347.