11. thou mayest understand—canst easily learn.
that there are yet but twelve days since I went up to Jerusalem—namely, 1. The day of his arrival in Jerusalem (Ac 21:15-17); 2. The interview with James (Ac 21:18-26); 3. The assumption of the vow (Ac 21:26); 4, 5, 6. Continuance of the vow, interrupted by the arrest (Ac 21:27, &c.); 7. Arrest of Paul (Ac 21:27); 8. Paul before the Sanhedrim (Ac 22:30; 23:1-10); 9. Conspiracy of the Jews and defeat of it (Ac 23:12-24), and despatch of Paul from Jerusalem on the evening of the same day (Ac 23:23, 31); 10, 11, 12, 13. The remaining period referred to (Ac 24:1) [Meyer]. This short period is mentioned to show how unlikely it was that he should have had time to do what was charged against him.
for to worship—a very different purpose from that imputed to him.