Last week, John began his Easter accounts in another garden, outside the empty tomb. Since then, Mary Magdalan has encountered the risen Lord in that garden, and she has told the other disciples about it. We all know what that feeling is like. And so Jesus comes to them. In the power of his resurrection, there is no obstacle that can stand in his way.
Locked doors are no problem.
Even time can no longer keep him away. As a man of this world, Jesus could only be in one place at a time, one moment at a time. But as the Lord of Life, those boundaries disappear. Not even doubt keeps him away. Jesus shows himself to Thomas in the way Thomas needs so that he can believe.