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John Calvin supported the "agent of God" Christology and argued that in his trial in Pilate's Court Jesus could have successfully argued for his innocence, but instead submitted to crucifixion in obedience to the Father. This Christological theme continued into the 20th century, both in the Eastern and Western Churches. In the Eastern Church Sergei Bulgakov argued that the crucifixion of Jesus was "pre-eternally" determined by the Father before the creation of the world, to redeem humanity from the disgrace caused by the fall of Adam. In the Western Church, Karl Rahner elaborated on the analogy that the blood of the Lamb of God (and the water from the side of Jesus) shed at the crucifixion had a cleansing nature, similar to baptismal water.

What kind of Christology was supported by Karl Rahner?
unanswerable