This material is based on John 7-9.  In this episode, right after Jesus deals with the woman caught in the act of adultery he begins teaching in the temple.  A handful of Jews start believing in Jesus.  But that did not mean that they understood him.  They are confused about Jesus says about who sent him, where he soon will be going, why no one will be able to find him, etc.  Typical of this Gospel, much of what Jesus says is cryptic.