The Two Covenants
Andrew Murray
This book by Andrew Murray is an absolute "MUST READ" for anyone struggling with issues concerning the Christian or Hebrew Roots/Messianic faith, and their uneasiness with the perspective or practices of either. While this book does not examine the Old Testament Covenant from a Hebrew Roots or Messianic perspective, written as it was in 1898, it does get the focus of the covenants, New and Old back on God, and what He was working out through them.
Rees Howells, Intercessor
My Utmost For His Highest