1 Corinthians Chapter 14 - Marianne Manley

Paul contrasts prophesy with tongues.
Paul discusses spiritual gifts in chapters 12 to 14.
In his letters Paul uses the word "ignorant" ten times, but in 14:38 he says "ignorant" two times.
What is the worlds largest denomination?
It is that of the ignorant brethren.
Who are the ignorant brethren?
What is it that Paul does not want the Corinthians or us in the body of Christ to be ignorant of?