How the story ends

My dear brother posted on How the story begins. My question is how the story ends.

Joh 19:28-30 After this, Jesus knowing that all things were now accomplished, that the scripture might be fulfilled, saith, I thirst. (29) Now there was set a vessel full of vinegar: and they filled a spunge with vinegar, and put it upon hyssop, and put it to his mouth. (30) When Jesus therefore had received the vinegar, he said, It is finished: and he bowed his head, and gave up the ghost.

What is 'It'?
All things?

If it is all finished then why do we place the importance on the resurrection?