This is one we have used in first communion services with some success over the years. It is a simple but powerful song by John Burland and John Jacobs. The excerpt at AOV is suitably reverent. This is a pleasant version.
Let the Spirit dwell within our hearts
To celebrate the wonder of our God
As we reach out together
And find our strength in you
Come share the gifts of the Spirit
© John Burland and John Jacobs 1995.