New Defender's Study Bible Notes
8:1 do you to wit. The words “do you to wit,” a common expression in Elizabethan England, would be rendered “make you to be aware of” in modern English.
8:1 grace. The “grace” mentioned here is not in reference to salvation, but to Christian character, which should exhibit many Christian graces in word (e.g., Colossians 4:6) and deed (e.g., II Corinthians 9:8), as well as the Christian life as a whole (e.g., II Peter 3:18). In I Corinthians 8 and 9, Paul is especially referring to “this grace also” (II Corinthians 8:6-7), meaning the grace of giving.
8:1 churches of Macedonia. The “churches of Macedonia” included Thessalonica and Berea, and especially the church at Philippi, from which Paul was writing and sending this second letter to the churches of Achaia, notably that at Corinth.