What is finished?

When Jesus therefore had received the vinegar, he said, It is finished: and he bowed his head, and gave up the ghost, John 19:30 . Before I weigh in on this, I would like to recount a story from my time as an unbeliever that took place as I was beginning to grapple with eternal truth. I was in the military at that time serving overseas. I had been living a double life, not as someone who was a…