Use sources properly. Apply scriptures in harmony with their context, the Bible’s overall message, and the publications of “the faithful and discreet slave.” (Matt. 24:45)
In other words, if you happen to discover how our doctrines are contradicted by the Bible, don't use those verses.
Use secular sources in accord with the original context and the intent of the writer.
Surely they must be joking. What an insane level of hypocrisy.
'You who preaches to quote secular sources fairly, do you quote out of context?'