6 Bible Verses about Unknown Future

Surely no one knows what will be, so who can tell anyone what will happen?

For who knows what [is] good for a man in his life during the few days of his fleeting life, which are fleeting as a shadow? For who can tell anyone what will happen {in the future} under the sun?

The fool {talks too much}, for no one knows what will be. Who can tell anyone what will happen {in the future}?

So I concluded that there is nothing better for a person than to enjoy [the fruit of] his labor, for this is his lot in life. {For no one knows what will happen in the future.}

In the day of prosperity, rejoice! But in the day of adversity, consider! For God made one in place of another so that mortals cannot find out what will happen {in the future}.

There is neither remembrance of former generations, nor will there be remembrance of future generations.