God wills for all humans to freely enter into relationship with him.1 This is relevant because Jesus's appearing to all persons in the world would best accomplish this.2
By way of response, however,…
Mike Licona: “Whatever reason God had for doing it that way, it worked. Nearly a third of the people of the world today claims to be Christian. And I think it's just like the Christian God to use the weak to trump the strong, and the fools to shame the wise. It would be just like that God to take the few and the obscure to influence the masses. Now, because of that, the world has been turned upside down.” [Lee Strobel, The Case for the Real Jesus (Zondervan, 2014), 153.]
God wills for as many people as possible mentally assent to the truth of Christianity.1 This is relevant because having Jesus appear directly to all persons is the most efficient means by which God could bring about this result.2
By way of response, however,…
Luke 16:31 -- But he said to him, ‘If they do not listen to Moses and the Prophets, they will not be persuaded even if someone rises from the dead.’” Matthew 28:17 -- When they saw Him, they worshiped Him; but some were doubtful. Such appearances would do nothing for solipsists (who believe they are in a dream world), or individuals who would simply be convinced a demon or alien is tricking them. If God willed for all to merely believe Christianity is true, then God would just bring that about directly (with a metaphorical snap of his fingers).
Getting humans to reason from resurrection evidence to the truth of Christianity is the only or primary way God would desire bring someone to belief that Christianity is true. This is relevant because Jesus's appearing is the best or only way to get us to reason from Jesus's resurrection to the truth of Christianity.
By way of response, however,