Gregory of Elvira on the Song of Songs

Explanation of the Song of Songs 3.29

These two hands are the two covenants of the old law and the gospel. When it refers to his left hand, it indicates the old covenant, but the right hand is the preaching of the gospel. The old covenant is inferior because it is placed beneath the head of the church, who is Christ, whereas the right hand embraced the church, meaning that old sins were covered by the sacraments of the gospel. Whoever goes forth in faith, therefore, and serves Christ with devotion, leaves the old person beneath himself and embraces anew the body of Christ, which is the church.

Gregory of Elvira in J. Robert Wright, Ancient Christian Commentary on Scripture: OT IX (Downers Grove: IVP, 2005), 314.