The same cup
One of the arguments made in Pierced for our transgressions that caused me to roll my eyes in despair a bit more than usual was the claim the use of the word "cup" in the gospels in reference to Jesus' death proves Penal Substitution. Their alleged logic behind this is that the Old Testament uses the word cup in the content of God punishing people and being wrathful. They quote a few passages and apparently this therefore proves by the use of the same word in the gospels that God is being depicted as wrathful toward Jesus. (God is actually never described in the Bible as wrathful toward Jesus, hence why the authors of PFOT need to go to such extreme lengths to find proof for their idea) Thus, Jesus' bears the cup of God's wrath poured out on him as a substitute for sinful humanity etc. Anyway, at the time of reading I just dismissed it as yet another one of their E-grade arguments and mentally bucketed it with Goligher's stellar argument that mention of the herb hyssop proves penal substitution.
But in Brondos' Paul on the Cross he has an extended discussion of how in the bible believers are said to suffer the same sufferings that Christ himself suffered, dying "with" Christ etc. His aim is thus to demonstrate that Christ's sufferings weren't thought of as unique among humanity's but rather that Christ suffered in the course of trying to achieve certain things and subsequently his followers suffered for those same goals. Among other passages, he mentions this:
But Jesus said to them, "You do not know what you are asking. Are you able to drink the cup that I drink, or be baptized with the baptism that I am baptized with?" They replied, "We are able." Then Jesus said to them, "The cup that I drink you will drink; and with the baptism with which I am baptized, you will be baptized; (Mk 10:38-39)
That cracked me up. If you use the PFOT logic of "cup" meaning PS, then this says the disciples are also penal substitutes for the sins of humanity! They drink from the same "cup" of God's wrath as Jesus in their death, and are "baptized" like Jesus in God's wrath. ~snigger~
I was impressed though at Brondos' demonstration of just how strong the theme of us dying like Christ for the same things as Christ is in the New Testament. Not only the (in)famous passage "in my flesh I am completing what is lacking in Christ's afflictions" (Col 1:24) but heaps of others as well speak of believers suffering like Christ for the same causes as Christ in order to attempt to achieve and further the goals Christ was trying to achieve.