<p>21:23 <em>Therefore do what we tell you: We have four men who have taken a vow</em>- The &quot;therefore&quot; reflects how urgently they felt the need to placate the Judaists. Paul did what he was told, even although it was wrong and based around pleasing men. I sense he made this misjudgement not because he was browbeaten by these brethren, although he was pretty much alone before them; but because he like them was desperate at all costs to ingratiate himself to the Jerusalem church and reconcile and convert the temple cult. Those desires became such an obsession that they clouded his better judgment. The &quot;vow&quot; was apparently a Nazirite vow.</p>