'Mid heaven' in the Bible

And I saw, and I heard one messenger, flying in the mid-heaven, saying with a great voice, 'Woe, woe, woe, to those dwelling upon the land from the rest of the voices of the trumpet of the three messengers who are about to sound.'

And I saw another messenger flying in mid-heaven, having good news age-during to proclaim to those dwelling upon the earth, and to every nation, and tribe, and tongue, and people,

And I saw one messenger standing in the sun, and he cried, a great voice, saying to all the birds that are flying in mid-heaven, 'Come and be gathered together to the supper of the great God,