'Generation' in the Bible

How great are his signs! and how mighty are his wonders! his kingdom is an everlasting kingdom, and his dominion is from generation to generation.

At the end of the days I, Nebuchadnezzar, lifted up my eyes to heaven, and my understanding returned to me, and I blessed the Most High, and I praised and honored him who lives forever; for his dominion is an everlasting dominion, and his kingdom from generation to generation.