Cf. Irenæus (III. xvi. 8):  “All therefore are outside the Dispensation, who under pretence of knowledge understand that Jesus was one, and Christ another, and the Only-begotten another (from whom again is the Word), and the Saviour another.”  The Cerinthians, Ebionites, Ophites, and Valentinians are mentioned by Irenæus as thus separating the Christ from Jesus.