Jesus told his disciples, “it is for your good that I am going away. Unless I go away, the Advocate will not come to you; but if I go, I will send him to you.” I’m not sure any of them would have believed him. Jesus was flesh and bone – and, at times, that is far better than anything we could ask for or imagine. But this is not true in the mind of Jesus.
He says that he will send an “another Advocate.” The word there for another means “one who is like the other.” So wait … the Spirit is like Jesus? Well yes, because the Spirit is God just as Jesus is God. He is one who brings comfort, guidance, illumination and one who suffers with us (Romans 8). This is the one Jesus spoke of.