John 16:19-21 NIV
Jesus saw that they wanted to ask him about this, so he said to them, “Are you asking one another what I meant when I said, ‘In a little while you will see me no more, and then after a little while you will see me’? Very truly I tell you, you will weep and mourn while the world rejoices. You will grieve, but your grief will turn to joy. A woman giving birth to a child has pain because her time has come; but when her baby is born she forgets the anguish because of her joy that a child is born into the world.
NIV: New International Version