St. Ignatius, in his Epistle to the Smyrnaeans, mentions an interesting episode that doesn't seem to be present in the canonical gospels. His takeaways from the episode are also equally interesting.
(ch.3; translated by NewAdvent) For I know that after His resurrection also He was still possessed of flesh, and I believe that He is so now. When, for instance, He came to those who were with Peter, He said to them, Lay hold, handle Me, and see that I am not an incorporeal spirit. And immediately they touched Him, and believed, being convinced both by His flesh and spirit. For this cause also they despised death, and were found its conquerors. And after his resurrection He ate and drank with them, as being possessed of flesh, although spiritually He was united to the Father.
This episode contains, by my count, four distinctive features:
- Jesus came to "those who were with Peter"
- Jesus said to them, "Lay hold, handle Me, and see that I am not an incorporeal spirit."
- After doing what he says, they are immediately convinced and believe (in the good news?), that is, they do not doubt.
- Afterward, Jesus ate and drank with them, as a person would.
Conflict with the Gospels
In Matthew (ch. 28), Jesus insisting that the disciples touch him to be convinced of his flesh isn't mentioned; while they worshiped Jesus, some\* explicitly doubted (v.17), but it doesn't seem to be much of a problem to Jesus, who notably doesn't speak Ignatius' quote here nor eat with the disciples.
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Luke (ch. 24) does have some shared factors to Ignatius, but still there are points of conflict:
- Jesus appears to the gathered disciples while they are talking about what had just happened (the Walk to Emmaeus; vv. 13-35).
- What he says is similar to what Ignatius writes, although here the reasoning provided by Jesus for his insistence is perahsp more explicit (v. 39; "for a ghost does not have flesh and bones as you see that I have." Is the word for "ghost" the same as the word translated as "incorporeal spirit" in Ignatius?)
- He does eat and drink with them, which aligns with Ignatius.
- When the disciples do what he says, however, they explicitly are not convinced by this alone (v. 41), and they only worship when he ascends to heaven (vv. 50-53).
So Luke agrees with two of my noted distinctions, parallels another, and disagrees with perhaps the most significant one.
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Skipping over Mary Magdalene in the Empty Tomb, John has a few post-resurrection appearances. In the first of such appearances, we have probably the closest narrative to Ignatius in the Gospels:
- The disciples are hiding away from the Jews (v. 19), but Thomas is not present (v. 24). Jesus suddenly appears to them, shows them his hands and his side, and "they rejoiced when they saw the Lord." Implicitly, the disciples are believing, although that is not explicitly stated as being the result of what Jesus has just done.
- Then Jesus appeared to Thomas, who did not believe the other disciples when they told him about the previous appearance, and he says to Thomas only: "Put your finger here and see my hands. Reach out your hand and put it in my side. Do not doubt but believe."
- Thomas's response, "My Lord and my God!", is also his confession of belief, regardless of what it means precisely. Thus, Jesus showing his hands and his side, and contextually also Thomas touching Jesus in these places (cf. v. 25), causes him to believe immediately.
- In the next post-resurrection appearance (ch. 21), Jesus tells the disciples to sit and have breakfast (vv. 12-13) from the miraculous catch they had just gotten (v. 8). Then it is stated that they had breakfast (v. 15; "When they finished breakfast..."), but I don't know if Jesus is included here.
So the Gospel of John only parallels three of my notes and might affirm another.
Conclusion
My personal conclusion from these is that Ignatius seems to be sorta quoting a text that shares themes that are only present in Luke and John (Jesus insisting that he is flesh and the disciples believing so), while this text is nevertheless still elusive and unknown, afaik.
As an aside, it's interesting to me that Ignatius states: "I believe that He is so [in possession of flesh?] now." Does he mean, he believes that Jesus still has a body? [Relatedly] That Jesus is still walking around in his time?
It'd be great if somebody had some scholarly resources on the topic; how wrong am I? Lol.