How does he emphasize the reliability of prophecy?

Answer

"And we have the word of prophecy made more sure." Verse 19, R.V. "Now more confirmed."
Boothroyd's translation.
NOTE - Every fulfillment of prophecy is a confirmation of the truthfulness and reliability of
prophecy.

For what purpose is the grace of Christ received?
With what words do the Scriptures conclude the record of Christ's early life?
What did Pilate propose to do when Christ was again brought before him?
Through whom do we have sanctification?
Unto whom are God's people to be gathered?
Are God's people free from affliction?
Who constitute the true Israel, or seed of Abraham?

Questions & Answers are from the book Bible Readings for the Home Circle