Four sections of the video: medical argument, church history argument, Bible study argument, Greek/lexical argument

The four egalitarian arguments for kephale not meaning authority are: (1) the medical argument about ancient understanding of the head's function, (2) the church history argument from Chrysostom, (3) the Bible study argument from Paul's context, and (4) the Greek/lexical argument — the largest section, involving the 'battle of the lexicons.'