ACC ~ Galatians 6 v18

WITH YOUR SPIRIT. CHRYSOSTOM: By this final word he has sealed the argument of the letter. For he does not say simply “with you,” as in the other letters, but “with your spirit.” He is leading them away from corrupted things and pointing everywhere to the benevolent work of God and reminding them of the grace that they have enjoyed. By this he is able to lead them away from the legalistic error in its entirety. For the receiving of the Spirit was not for the poverty of legalism but for righteousness according to the Spirit. … The concluding prayer and teaching work together, serving as a double fortress. The teaching reminds them of all the gracious benefits they have enjoyed and holds them all the more firmly in the teaching of the church. And this prayer, by invoking grace and persuading them to stand fast, does not allow their spirit to fall away. HOMILY ON GALATIANS 6.18.

THE GRACE OF OUR LORD. JEROME: How does the blessing refer to the letter? Not discord, not slavery to the law, not biting and railing, but the grace of the Lord Jesus Christ is asked to be “with your spirit.” Not with the flesh only; not with the soul only. For having been made spiritual they have ceased to be cheaply embodied. In the Spirit both body and soul are embraced. The grace of the Lord Jesus is not given indiscriminately to all but to those who are ready to be called brothers by the apostle—faithful brothers and intimate brothers, as the word amensignifies in Hebrew. EPISTLE TO THE GALATIANS 3.6.18.

THE EPISTLE TO THE EPHESIANS