10. Greek, "I (emphatical: 'I on my part') have confidence in the Lord with regard to you (2Th 3:4), that ye will be none otherwise minded" (than what by this Epistle I desire you to be, Php 3:15).
      but he that troubleth you-- (Ga 1:7; Ac 15:24; Jos 7:25; 1Ki 18:17, 18). Some one, probably, was prominent among the seducers, though the denunciation applies to them all (Ga 1:7; 4:17).
      shall bear--as a heavy burden.
      his--his due and inevitable judgment from God. Paul distinguishes the case of the seduced, who were misled through thoughtlessness, and who, now that they are set right by him, he confidently hopes, in God's goodness, will return to the right way, from that of the seducer who is doomed to judgment.
      whosoever he be--whether great (Ga 1:8) or small.

JFB.