δυσνόητος G1425
dysnóētos · doos-no'-ay-tos · Adjective
from δυσ- and a derivative of νοιέω; difficult of perception:--hard to be understood.
1 Occurrence in the King James Bible
2 Peter 3:16As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, unto their own destruction.