Why Jesus left us
There resides in us the raw material for living with and by the Spirit of God. Why didn't our Lord remain on earth? There could have been many advantages. We could have been thrilled by the majesty of his bearing, awed by his presence and his words. Yet he said: “It is better for you that I go. For if I go not, the Spirit will not come to you” — the Holy Spirit. The Spirit will not come. If Jesus had remained on earth, he would always be outside of us, like an example to be copied, like a model outside of an artist. If He left and sent his Spirit, then he would be a veritable life to be lived. So Christ sends his Spirit to us.