Title: We don’t know where you are going
The disciples were setting the Lord Jesus within the sphere of their small world, and they were consigning spiritual locations into measurable distances and localities. They figured out that all they needed was to know the specific destination, and it would be easy finding the shortest way to reach it.
When confronted with spiritual truths, we tend to contain them into manageable pieces of information, as we perceive them within our recognized maturity and exposure to Biblical preaching. The disciples were clearly ignorant of heavenly things in spite of the exposure they had to the teachings and miracles of the Son of God, as evidenced by their earth-bound reaction to a glorious heavenly declaration.