'Exists' in the Bible

What exists now is what will be, and what has been done is what will be done; there is nothing truly new on earth.

Whatever exists now has already been, and whatever will be has already been; for God will seek to do again what has occurred in the past.

What the king is asking is too difficult, and no one exists who can disclose it to the king, except for the gods -- but they don't live among mortals!"

If our God whom we are serving exists, he is able to rescue us from the furnace of blazing fire, and he will rescue us, O king, from your power as well.

I hereby decree that any people, nation, or language group that blasphemes the god of Shadrach, Meshach, or Abednego will be dismembered and his home reduced to rubble! For there exists no other god who can deliver in this way."