Assurance
Romans 8:28
We know that all things work together for good for those who love God, for those who are called according to his purpose.

This verse is often handed to people at the worst possible moment, as though it meant the bad thing was secretly good. It does not say that. It says all things work together, which is a claim about the whole and not about each piece.
Paul had a fairly complete catalogue of hard things and he lists some of them a few lines later. He is not writing from a comfortable chair. The confidence is not that nothing will hurt. It is that nothing will be wasted.
We know is worth sitting with too. Not we hope, not we feel. He puts it in the voice you would use for something you had checked.