Granted, Martha knew Jesus.
Her staff when she is Rider was given by him personally she also mention him several times in the Jailter Christmas Event, still weird that she is a SR but King David that is a ancestor of Jesus is a mere R granted is his "lily" version that doesn't even have Divinity (he has divine protection tho not the same)
That remind me that sperging we had in the IRC when it was confirmed that you could summon Messiahs (like Buddha well, one of them) in EXTRA (if you saw Last Encore the big ass ring that almost blowed all the Moon Cell is ONE of his NP)
Jesus is one of the persons that people don't know how to make it work in the Nasuverse, is pretty much a fact that he would be a Ruler/Saviour but if you follow the lore there are several things that could happen if you manage to summon him, the Abrahamic God is mostly confirm that it existed during the Age of Gods (The Ark of Covenant exist, is one of David Noble Phantasm and is his Bond CE) but like the rest his presence pretty much waned when Solomon died and was pretty much nuked when Jesus was crucified
1) Is affected by Innocent Monster like Salieri,Elizabeth Bathory and Vlad (Berseker) because there are several interpretations of him in all the branch of Catholicism (and some branch of weird ass Catholic witchcraft we have here) for example some people here dont believe that he was a Savior or something, only a very good and compassionate man so he would be summoned as a shepard like David that is how you mostly see him (at least here) instead of the ripped Jared Leto version with super powers that some church love to portray or he could be summoned as Superman because everyone believe he is something like him
2) He would be a concept like Nursery Rhyme, everyone relation the word Messiah with him even when in story there are others that also are considered saviours or at least have do more things for mankind so if for some reason he is summoned we would be amalgamations or other saviors
3) He would be a phony, mankind dont understand completely what salvation is or understand what a messiah is because no one has seen one since the age of gods, he would be like Angra Manyu that everyone believe is the cause of all evils in the world when in reality is just some poor kid that was cursed to oblivion because people believed it was the correct way to get rid of bad luck, so instead of Jesus you get something that resemble him and his (supposed) powers but would not be him
4) You would get a loli Jesus because japan doesnt care about pissing off the Vatican