Now the Lord is that Spirit: and where the Spirit of the Lord is, there is liberty.
All Commentaries on 2 Corinthians 3:17 Go To 2 Corinthians 3
Ambrose of Milan
AD 397
The same, then, is the Lord, who is the Spirit of the Lord; that is, he called the Spirit of the Lord, Lord, just as also the apostle says: “Now the Lord is a spirit, and where the Spirit of the Lord is, there is liberty.” You have then, the Lord called also the Holy Spirit; for the Holy Spirit and the Son are not one person but one substance. .