In the beginning, Adam and Eve could see God personally. They knew God existed but that's not the point. The point was this: Did they obey God? God created the world to test people. As people increased, sin increased and the physical presence of God became more remote.
What about the time of Jesus?
Jesus spoke the words of God and performed miracles. Yet, people would not believe. In the story of the Rich Man and Lazarus, Abraham said to the rich man who was being tormented in Hades in Luke 16:
Why doesn't God reveal himself unequivocally to the entire world?
Because that's not the point. You are here in this world as a testing ground for your behavior. Will you choose God based on faith and do good?
What about the future?
Well, one of these days, Jesus will return and reveal himself unequivocally to the entire world. By then, it will be too late.
What about the time of Jesus?
Jesus spoke the words of God and performed miracles. Yet, people would not believe. In the story of the Rich Man and Lazarus, Abraham said to the rich man who was being tormented in Hades in Luke 16:
After Jesus' resurrection, Thomas doubted his resurrection and said to the disciples who had seen Jesus in John 20:31b ‘If they (the rich man's brothers) do not hear Moses and the Prophets, neither will they be convinced if someone should rise from the dead.’
Then Jesus showed up and said to him:25b “Unless I see the nail marks in his hands and put my finger where the nails were, and put my hand into his side, I will not believe.”
Will you have faith and believe in Jesus and obey his teaching? That's the point.29b “Because you have seen me, you have believed; blessed are those who have not seen and yet have believed.”
Why doesn't God reveal himself unequivocally to the entire world?
Because that's not the point. You are here in this world as a testing ground for your behavior. Will you choose God based on faith and do good?
What about the future?
Well, one of these days, Jesus will return and reveal himself unequivocally to the entire world. By then, it will be too late.