Jesus said, "In the world you will have tribulation. But take courage; I have overcome..." what?

Answer: The world

Jesus ended his farewell words in John 16 with, "Take courage; I have overcome the world!"

“I have told you these things so that in Me you may have peace. In the world you will have tribulation. But take courage; I have overcome the world!””— John 16:33 (BSB)