Seeing but not believing

In my multiple interactions with atheists,  I often become frustrated at their varied responses, which really summarize down to one thing,  "give me some verifiable proof, so that then I will believe."
But it just occurred to me (literally). When we read in the gospel accounts of Jesus' resurrection, in three different responses we see a common theme.  When Mary saw Jesus at the tomb,  when the disciples saw Jesus on the road to Emmaus, and when Thomas was told of first hand accounts of Jesus' resurrection,  none of them believed upon "seeing" Jesus.  It wasn't until they interacted with him, that they recognized him.
It will be the same with atheists.  No matter how strong or passionate our explanations and arguments, they will not believe.  Atheists need to interact.  The atheist needs to seek out and interact with God before they will believe.
Let us pray that they have that opportunity before they pass into eternity.