#What does Jesus call the other comforter that the Father will give to be with the disciples forever?

Jesus calls him the Spirit of Truth. [14:17]

#Why can the world not receive the Spirit of Truth?

The world can't receive the Spirit of Truth because it does not see him or know him. [14:17]

#Where does Jesus say the Spirit of Truth will be?

Jesus said the Spirit of Truth would be in the disciples. [14:17]