'Trouble' in the Bible

When Jesus became conscious that his disciples were protesting about what he said, he said to them, Does this give you trouble?

Now is my soul full of trouble; and what shall I say? Father, save me from this hour. But for this purpose I have come to this hour.

A woman, when she gives birth to a child, has grief because her hour has come; but when the child is born, she no longer remembers the trouble, on account of the joy that a man has been born into the world.

I have told you this so that through me you may have peace. In the world you'll have trouble, but be courageous I've overcome the world!"