God physically appearing to everyone would not necessarily eliminate unbelief; unbelief is often a heart issue, not an evidence problem.

Mike first cautions against the why doesn't God do my solution mentality — a position of deep ignorance. Substantively: (1) Jesus performed many miracles and unbelief persisted; (2) in John 5, Jesus attributes contemporary unbelief to a heart issue — they would not believe Moses so they will not believe Jesus; (3) John 1: people loved the dark; (4) Matt Dillahunty cited as someone who said he would reject God even if he knew it were true. Romans 1 indicates God's existence is already obvious; heart hardness is the real obstacle. The Holy Spirit convicting of sin and righteousness is often more determinative than evidence. Correct perspective: humanity owes God, not the reverse.