7:95Then We substituted prosperity in place of hardship. Until they increased in number, and said, “Adversity and prosperity has touched our ancestors.” Then We seized them suddenly, while they were unaware.

7:187They ask you about the Hour, “When will it come?” Say, “Knowledge of it rests with my Lord. None can reveal its coming except He. It weighs heavily on the heavens and the earth. It will not come upon you except suddenly.” They ask you as if you are responsible for it. Say, “Knowledge of it rests with God,” but most people do not know.