'Lives' in the Bible

“But at the end of the days [that is, at the seven periods of time], I, Nebuchadnezzar, raised my eyes toward heaven, and my understanding and reason returned to me; and I blessed the Most High [God] and I praised and honored and glorified Him who lives forever,For His dominion is an everlasting dominion;And His kingdom endures from generation to generation.

As for the rest of the beasts, their power was taken away; yet their lives were prolonged [for the length of their lives was fixed] for a predetermined time.

And I heard the man dressed in linen, who was above the waters of the river, as he held up his right hand and his left hand toward heaven, and swore by Him who lives forever that it would be for a time, times, and a half a time (three and a half years); and as soon as they finish shattering and crushing the power of the holy people, all these things will be finished.