<p>1:20- see on Gal. 1:1.</p><p><em>In what I am writing to you, before God, I do not lie</em>- Clearly Paul's version of events was questioned. All manner of conspiracy theories and slander had arisen, as they do in the life of anyone who devotes themselves to preaching Christ in truth. The origin of the 'troublers' of 1:7 was likely Jerusalem (see note there). Paul is answering the objection that 'Jerusalem' did not support him by strongly agreeing with it- and insisting that he had higher authority than Jerusalem, namely, his direct relationship with the Lord Jesus.</p>