Don’t know what happened but the link to the comments page under your posting leads to a deadlink. I think maybe blogger is having a bad day.
I’m intrigued by … ‘One sows and another reaps.’ I sent you to reap that for which you did not labor. Others have labored, and you have entered into their labor. … I don’t really understand what this means.
My best guess — which not likely much better than yours — is that the “others who have laboured” are the prophets from the Hebrew scriptures. The prophets sowed the seeds, tended the fields, and Jesus’ disciples reap the harvest.