I have what I believe to be a very strong argument against the veracity of Christianity. It might seem like a rather silly argument at first, but I believe it is actually very damning, and is further an argument I haven’t seen advanced elsewhere. I hope you will allow me to first lay out some premises.
First, we can take as a proposition that Christ’s death and resurrection as depicted in the Gospels actually occurred. Second, we can take as a proposition that God wants as many people as possible to know of Christ's crucifixion and resurrection. We can assume this from the fact that apostles were sent out to all nations to preach of this. Third, we can take as a proposition that God is capable of miracles. We can assume this from the miracles attributed to Jesus during his lifetime, from the miracle of the resurrection itself, and from the other miracles attributed to God throughout the Bible. Now, taking these three propositions as given, we ask the question: why didn’t God use miraculous means to immediately inform the entire world of Christ’s passion and arising?
If this seems like a strange thing to ask at first, we must look closer at the shortcomings of spreading news of Christ by non-miraculous means. As it actually happened historically, with the message of Christ being spread by human apostles, it took time, sometimes great lengths of time, for the good news to reach the nations of the world. For those more distant from Judea, there were entire generations that could live and die before the word of Christianity reached them. We can consider the most extreme cases, such as that of the Americas. In that case, there were two entire continents of people for whom it took almost 1500 years before receiving the story of Christ’s death and resurrection. That’s 1500 years of people leading out their entire lives without knowledge of this thing that God presumably wanted them to know. In a more extreme case yet, we have the various uncontacted tribes in the present world who still haven't been reached by Christianity after 2000 years.
So, what could God have done differently if he really wanted everyone on earth to know of Christ from the moment of his passion and resurrection? God, who we know is capable of grand miracles, could have simply appeared in the sky, and announced the news of what had just happened with Christ in everyone's native tongue. Now, demanding this might seem a bit silly at first. But we have to remember what is at stake: the knowledge of billions of people about Jesus Christ, which their homelands otherwise wouldn’t receive until years after their own deaths. If we actually take it seriously that God wants as many people as possible to know of Christ, and that God is able and willing to use miracles to advance divine ends, as he is recorded doing both within Jesus’ life and at other places in the Bible, it seems like it becomes necessary for God to use a miracle to instantly spread word of Christ so that billions will not go to their deaths without knowledge of him. But, as we can see from history, no such miraculous apparition actually occurred, and it was only through the vastly imperfect means of human apostles that the good news was slowly, haltingly spread.
I believe that as silly as this demand on God might initially seem, if we really take seriously the vast gulf in human knowledge of Jesus between what actually was and what could have been, it becomes clear that there is a glaring contradiction that occurs within the assumption that Jesus was divine and was really resurrected. If this really happened, if God really wanted as many people as possible to know that it happened, and if God has the ability to perform miracles, then logic would seem to demand a miraculous spreading of the news of Christ. Absent such a miracle, as we can see is the case in the actual historical record, we are forced to assume that one of the initial premises must therefore be untrue, meaning that belief in Christ’s resurrection and status as God is fundamentally called into question. If we took as assumptions that Christ resurrected, that God wants the news of this to be spread, and that God can perform miracles, then absent this grand miracle it seems logical to assume that Christ must not actually be the divine figure claimed in the Gospels, and that his resurrection did not actually occur.