n 1926, Rutherford reinterpreted the Faithful Slave from a single person to a group of people. Thus the interpretation had come full circle, but this time the servant included Jesus as well as the 144,000. So "the Christ" is Jesus alone, Jesus and member of his body collectively as one, or applied only to the members of the body of Christ yet on earth. Three different things...
"Seeing then that The Servant of Jehovah is The Christ, and that The Christ is composed of Jesus and the faithful members of his body, we find it proper to apply the term "Servant" to Jesus Christ alone or to Jesus Christ and the members of his body collectively as one; and sometimes it is applied only to the members of the body of Christ yet on earth." Watchtower 1927 Feb 15 p.53