FYI, Verse 2 and the following chorus were not recorded because the tape reached the end and flipped over.
Honestly, when this one started I smiled. I thought it was kind of silly - it sounded like a carnival song. It sounded like typical organ "church music". I never remembered Grandpa singing it. I don't remember ever hearing it. I was wondering why he picked it, but then I started to listen to the lyrics. They're simple. The story they tell and the imagery it uses isn't really clear, but the heart is there. Knowing that he picked it, coupled with the minister's "walk vs. talk" remark, helped provide closure for me.
From a Google search: In The Garden - Lyrics [lyrics and a quote from Miles], Realms of Faith: In the Garden Reconsidere [a commentary on the hymn and (musical) worship in general]
Wikipedia doesn't have a page for it (yet)