On the night of his betrayal, Jesus Christ revealed the deepest concerns of his heart to his disciples. The hours he spent that evening, with his disciples in the upper room, left an indelible impression on the apostle John. Thereafter he never ceased to be amazed by the fact that our fellowship is with the Father, and with his Son, Jesus Christ'. Nowhere in Scripture is this privilege more fully expounded that in Chapters 13 to 17 of John's Gospel. John's record of Jesus' words and actions takes us into the inner sanctuary of the Christian's relationship to God. We hear of the mystery of the Trinity, the reality of union with Christ, and the glory which belongs to the Son. Here, in the time of crisis, the grace of our Lord Jesus Christ shines forth in all its glory. In these pages, Charles Ross (who belonged to the same school of Scottish evangelicals as Robert Murray M'Cheyne and the Bonars) shows how all of God's wisdom and knowledge are revealed in Jesus Christ. The Inner Sanctuary is a little known treasure of biblical exposition and an outstanding aid to increased devotion to Jesus Christ.