As it was usual with the Old Testament prophets to comfort the church in its calamities with the promise of the Messiah ( Isa. 9:6 ; Mic. 5:6 ; Zech. 3:8 ); so, the Messiah being come, the promise of the Spirit was the great cordial, and is still. Three things we have here concerning the Comforter’s coming :-- I. That Christ’s departure was absolutely necessary to the Comforter’s coming, John 16:7...