John Calvin on Galatians 6:10

10. While we have opportunity. The metaphor is still pursued. Every season is not adapted to tillage and sowing. Active and prudent husbandmen will observe the proper season, and will not indolently allow it to pass unimproved. Since, therefore, God has set apart the whole of the present life for ploughing and sowing, let us avail ourselves of the season, lest, through our negligence, it may be taken out of our power. Beginning with liberality to ministers of the gospel, Paul now makes a wider application of his doctrine, and exhorts us to do good to all men, but recommends to our particular regard the household of faith, or believers, because they belong to the same family with ourselves. This similitude is intended to excite us to that kind of communication which ought to be maintained among the members of one family. There are duties which we owe to all men arising out of a common nature; but the tie of a more sacred relationship, established by God himself, binds us to believers.

Galatians 6:11-13

11. Ye see how large a letter I have written unto you with mine own hand.

11. Videtis, qualibus literis vobis scripserim mea manu.

12. As many as desire to make a fair shew in the flesh, they constrain you to be circumcised; only lest they should suffer persecution for the cross of Christ.

12. Quicunque volunt placere juxta faciem in carne, hi cogunt vos circumcidi; tantum ut ne persequutionem sustineant cruce Christi.

13. For neither they themselves who are circumcised keep the law; but desire to have you circumcised, that they may glory in your flesh.

13. Neque enim qui circumciduntur, ipsi Legera servant; sed volunt vos circumcidi, ut in carne vestra glorientur.