does scripture interpret scripture

Simon Cozens, a missionary in Japan with WEC, examines the hermeneutic of "Scripture interprets Scripture" and finds it wanting.

His first issue is that the Bible writers themselves do not appear to have used this principle:

Indeed, when characters in the Bible make use of other Bible passages, they often do so in an obtuse and allegorical way. Paul wonderfully reinterprets "You must not muzzle your ox when it is treading grain" as "Give money to missionaries."

His second issue with "Scripture interprets Scripture" is what is missing from the equation:

Take a copy of the Bible. Put it down on a table. Observe it for a while. What does it do? Does it write a commentary on Galatians? Does it exegete some of the trickier passages in Romans? No. That's what we do.

It's worth your time to read the whole post.