‏ 2 Peter 1:19

We have also a more sure word of prophecy. Prophecy was a sure word, but when fulfilled in Christ and the gospel it seemed more sure. No class of evidence had more power with Jews than to show them that Jesus was the Christ of whom the prophets spoke.

Whereunto. To prophecy.

Ye do well that ye take heed. Heed its predictions and statements concerning Christ.

As unto a light that shineth in a dark place. It was a lamp shining in the darkness of the past and giving some light before the day star arose.

Until the day dawn. The full light of the New Testament.

And the day-star arise. Christ. See Re 22:16.
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