“I have told you these things,
so that in me you may have peace.
In this world you will have trouble.
But take heart!
I have overcome the world.”
This is both utterly realistic and perfectly, reassuringly hopeful:
In this world I will have trouble.
In Jesus I can have peace.
Jesus has already overcome the world.
I can be encouraged and full of confidence
(that's what it means to take heart)...
even though there will be trouble in this world.
This world is not my home.
Jesus has gone to prepare a place for me,
and where He is, I will someday be also (John 14:1-3).
You can have all this world, give me Jesus.