On Iona, a declaration: The world belongs to God. "That means your house," He said. "I’ve got a job for you." This was the mustard seed. Hear how it grew. Bereaved a year, I knew my present house and garden were too big, that I must sell and leave. He spoke again: Make a home arranged for growing old and make it green. I bought a very ordinary house the sort where many live three bedroom semi. Costing less, there would be spare money to show how green such a house could be. Widow, seventy three, not worldly wise. How to begin such an enterprise? Yellow pages. Look for architects. One said the environment was his specialty. We met and talked, pondered and agreed. As work progressed, we got publicity. Three times the film crews came, BBC and ITV. Observed by the Observer we got an Ethical Award, and on their film delightful words of praise from Monty Don. So much the workmen had to do was new. ‘Steep learning curve’ Jon the contractor said each time mistakes were made, He kept his head while problems were resolved. Confusion sometimes reigned. It stressed me too but now, when someone wants an eco-house men from all the building trades know what to do. You must have a web-site, people said. I had no clue. That, said folk from SAGE, a Christian group, we can do. A carpenter became photographer. The Independent publicised its name and it’s still being visited today. If you use it too, you can join those who come week by week to see what has grown from that mustard seed.