Jesus changed the figure from the disciples being without a Helper to their being without a parent. He would not leave them in this traditionally destitute and vulnerable position. He would come to them. Which coming did He have in mind here (cf. John 14:3)?[source]
In view of the context that describes the Spirit"s coming ( John 14:16-17; John 14:25-26), we might conclude that His coming in the Spirit is in view (cf. John 14:23). However the passage seems to present Jesus as offering the disciples His personal presence. He had described the coming of the Spirit, but what about His personal return to them (cf. John 14:3)? This question, which would have been in the disciples" minds, is what Jesus appears to have been addressing here. He seems to have been referring to a post-resurrection appearance to the disciples ( John 21:1-14). Support for this view is Jesus" assurance that His resurrection would be a pledge of their resurrection. Physical resurrections seem to be in view. [source][source][source]