Carson is one of my favorite authors and I read as much of his stuff as I can find. I happened to come across this in his commentary on Matthew in the Expositor’s Bible Commentary, p 520 commenting on Matthew 25:
The fate of the nations will be determined by how they respond to Jesus’ followers, who, ‘missionaries’ or not, are charged with spreading the gospel and do so in the face of hunger, thirst, illness, and imprisonment. Good deeds done to Jesus’ followers, even the least of them, are not only works of compassion and morality but reflect where people stand in relation to the kingdom and to Jesus himself. Jesus identifies himself with the fate of his followers and makes compassion for them equivalent to compassion for himself.”
I really appreciate these words.
Soli Deo Gloria!