'Ever' in the Bible

And said to the king, May the king be living for ever: is it not natural for my face to be sad, when the town, the place where the bodies of my fathers are at rest, has been made waste and its doorways burned with fire?

Then the Levites, Jeshua, and Kadmiel, Bani, Hashabneiah, Sherebiah, Hodiah, Shebaniah, and Pethahiah said, Get up and give praise to the Lord your God for ever and ever. Praise be to your great name which is lifted up high over all blessing and praise.

On that day there was a reading from the book of Moses in the hearing of the people; and they saw that it said in the book that no Ammonite or Moabite might ever come into the meeting of God;