A little girl had a cut near her eye. Her father quickly took her to see the doctor. The cut was not serious, but the location of the injury made it important that it be fixed properly. The doctor decided a couple of stitches were needed, but he didn't want to give the child an anesthetic. He explained to her that the procedure would be painful and asked if she could stand it. The little girl replied that she could, if her father would hold her hand. The father then took her in his lap, slipped his arm around her, and held her tight. The doctor did his work, and the little girl never flinched. The father could not possibly have erased the pain from this process. If he had not been there, though, the girl's reaction would have been much different.
So it was for the disciples. The time was fast approaching when they would split up and travel to the far corners of the world to proclaim the gospel. Jesus would not be with them physically. He wanted them to know, though, that they would not be alone. His hand would still be in theirs. And that made all the difference in the world.