Because that (oti). Causal use of oti. By reason of him (di auton). "Because of him," regular idiom, accusative case with dia. Went away (uphgon). Cf. John 6:67 for this verb. Inchoative imperfect active of upagw, "began to withdraw" as happened at the time of the raising of Lazarus ( John 11:45 ) and the secession was still going on. And believed on Jesus (kai episteuon ei ton Ihsoun). Imperfect active of pisteuw (note aorist in John 11:45 ). There was danger of a mass movement of the people to Jesus.