<p>6:13 <i>For not even they who receive circumcision do themselves fully keep the law</i>- This recalls Paul's argument in chapter 5 that circumcision is only one of the whole package of Laws; without completely obeying the entire Law, those under the Law would be condemned.</p><p><i>But they desire to have you circumcised so they can boast about you</i>- This suggests that the 'boasting' about works in :4 is being said sarcastically. Salvation by works of obedience breeds pride and boasting; and such mindsets and communities typically place much boasting on how many others they have converted to their position. That was the situation in the Galatian churches.</p>