Answer:
The implied comparison in the phrase "a pastor and his flock" is an analogy between a shepherd and their herd of sheep.
Explanation:
A pastor is like a shepherd, leading and taking care of their flock, which is like a herd of sheep. The pastor provides guidance and protection to their flock, just as a shepherd would to their flock of sheep. The flock relies on the pastor for guidance, just as the sheep rely on the shepherd to keep them safe.