PERSPICUITY simply means that God made the Bible for the common man to be able to read and understand without the so-called scholars, scientists of academia or the Magisterium of Papal Rome.For example, the creation story is straight forward in explaining itself as 7 literal days. Or that the obvious difference between Genesis 1 & 2 is 1 is the big picture & 2 simply zooms in on day 6.
Or that when God flooded the earth--it was an actual world wide catastrophic flood.,etc...
All Scripture is inspired by God and is profitable
for teaching,
for reproof,
for correction,
and for instruction in righteousness,
that the man of God may be complete, thoroughly equipped for every good work.
2 Timothy 3:16,17