Final answer:
Hume's argument is that it is never rational to believe in a miracle based on testimony.
Step-by-step explanation:
David Hume argues that it is never rational to believe in a miracle based on testimony. He suggests that in order to accept an event as a miracle, there must be a sufficient number of witnesses, witnesses of good sense and education, and witnesses of integrity and good reputation.
Additionally, the miracle event should be publicly performed. Hume contends that these conditions have not been satisfied and that there is a logical obstacle to proving that events are miracles.