Matthew Poole and continuators on 2 Corinthians 11:18

18 Seeing that many glory after the flesh I will glory also.

By the flesh is meant, carnal and external things; which though they be the gifts and favours of God, yet do not at all commend a man to God. The Apostle saith, there are many that glory after the flesh; and there needs must be such in all places, because there are many that walk after the flesh: now it is but natural for men to boast and glory in these attainments, which it hath been the business of their lives to pursue after. Such there were doubtless in this famous Church; who gloried that they were Native Jews, or in their riches, or in their knowledge and learning. Now though (saith the Apostle) I know there is nothing in these things truly to be gloried in, yet others glorying in them, I will glory also; and let them know, that if I thought these things worth the glorying in, I have as much to glory in of that nature as any of them have.

Marginal references: Phil. 3.3, 4.