The days of the Son of Man

Luke 17:20-37
The kingdom of God does not come with your careful observation, nor will people say, 'Here it is', or 'There it is', because the kingdom of God is within you.
When? Just as it was in the days of Noah, so also will it be in the days of the Son of Man. People were eating , drinking, marrying and being given in marriage up to day Noah entered the ark. Then the flood came and destroyed them all.
Remember Lot's wife! Whoever tries to keep his life will lose it, and whoever loses his life will preserve it.
Where? Where there is a dead body, there the vultures will gather.
No amount of calculation can fix the time or place of Christ's return in judgment. It will be plain for all to see - no secret. And the world will be caught unprepared, as it was by the flood.
Why?
The kingdom of God is within us to all Christian. Do not pursue any on the world.
When the Jesus comes? No one expected time. Like flash light on the sky, no one know when. When people are eating, drinking... the end of world is come.
Dead body means dead men, without repent for their sins, so there the vultures will gather and the judgment will come to there.
How?
Do I have prepared for the coming days of Jesus? What I should prepare for Jesus coming?