As I left the second showing of the Cantata this morning, I pondered in my mind why God continues to call Jesus the Lamb even into the book of Revelations. He will be seen in the future as the Lamb upon His throne.
We are told that Jesus is also the Lion of Judah. Why does the Father not only portray Christ as the Lion after the resurrection and exaltation?
I would like to suggest an educated guess. Jesus still bears the wounds that He received as the slain lamb. John the Revelator refers to the exalted Christ three times as the slain Lamb. I believe that the Father chose to continue to call Jesus a Lamb because of these "forever wounds".
Jesus will forever bear the marks of our salvation in His blessed palms, feet, side, and head. The Father chose that His glorified body would retain these marks as testimonies that our sins are forever atoned for.
This is my best guess...and I think it is a good one. Praise be to the Lamb slain, resurrected, and glorified. To Him be honor, riches, glory, and might forever and ever. AMEN! He alone is Worthy. He is risen! He is risen indeed.