'Whether' in the Bible

I decided to indulge in wine, while still remaining committed to wisdom. I also tried to indulge in foolishness, just enough to determine whether it was good for human beings under heaven given the short time of their lives.

And who knows whether he will be wise or foolish? Either way, he will take possession of everything that I have done on earth, especially where I have excelled. This also is pointless.

Who knows whether the spirit of human beings ascends, and whether the spirit of animals descends to the earth?

Sweet is the sleep of a working man, whether he eats a little or a lot, but the excess wealth of the rich will not allow him to rest.

Sow your seed in the morning, and don't stop working until evening, since you don't know which of your endeavors will do well, whether this one or that, or even if both will do equally well.

For God will judge every deed, along with every secret, whether good or evil.