Response from Negative to Question 3
For the Third Question I am asked why the “cup” Christ mentions to the Apostles cannot be both the “Cup of God's Wrath” as well as the Cup of the Lord's Supper. Here are the reasons why I reject this argument:
1) The cup mentioned before the garden and in the garden are figurative, only the cup of the Lord's Supper is literal.
2) The question proposed would sound something similar to this: Can you [literally] drink of the Cup [of the Lord's Supper] which I am going to [figuratively] drink [by death]? You're introducing two meanings for 'cup' and 'drink' in the same sentence. That's equivocation.
3) In Jesus' challenge He mentions both “cup” and “baptism” which are coming up for him (Lk 12:50) and asks if the Apostles can undergo both. These are obviously both figurative and refer the same thing, suffering, otherwise Jesus would be mixing figurative (baptism) and literal (cup). It would be most unwarranted at that point to say this cup is the Lord's Supper.
4) When Jesus asks if the Apostles can drink of the cup He will drink, His question is a challenge to them. It is not much of a challenge if this amounts to sharing the Cup of His Blood at the Supper.
5) Your proposal amounts to the following equation: Cup in Garden = Cup of Lord's Supper = Cup of God's Wrath. There are obvious absurdities that arise from this, for example Jesus and the Apostles drank the Cup of the Lord's Supper. Or are you suggesting a stretched interpretation such as Jesus exhausting the Wrath making the Cup of the Supper 'safe to drink'?
6) You stated “God’s wrath is often expressed in killing those against whom his wrath burns,” yet nowhere do we see God's wrath upon Christ nor do we see God positively engaged with Jesus' death (i.e. a judicial declaration and execution which is what Penal Substitution demands, as opposed to withholding divine protection, Mt 26:53), which is always described as murder (eg Acts 3:13-15; 7:52; 10:39-40).