The Apostle Paul
Galatians 6:13BSB·traditional attribution

For the circumcised do not even keep the law themselves, yet they want you to be circumcised that they may boast in your flesh.

John Calvin Reformed @genevareformer

13. For neither they who hold by circumcision keep the law. The old version and Erasmus translate thus: who are circumcised. But Paul appears to me to refer to teachers only; and for this reason I would prefer to render the words, those who hold by circumcision, which would not include all circumcised persons, and thus would avoid ambiguity.

Matthew Henry Presbyterian @wholebiblehenry

The apostle, having at large established the doctrine of the gospel, and endeavoured to persuade these Christians to a behaviour agreeable to it, seems as if he intended here to have put an end to the epistle, especially when he had acquainted them that, as a particular mark of his respect for them, he had written this large letter with his own hand, and had...

Commenting on Galatians 6:11-18

John Gill Reformed Baptist @doctorgill

But God forbid that I should glory,.... The apostle, on the contrary, expresses his aversion to glorying in anything these men did; not in his outward carnal privileges, as a Jew; nor in his moral, civil, and legal righteousness; nor in his gifts and attainments; nor in his labours and success, as of himself; nor in the flesh of others, or in any outward corporeal...