'Eternal' in the Bible

Are you not eternal, O Lord my God, my Holy One? for you there is no death. O Lord, he has been ordered by you for our punishment; and by you, O Rock, he has been marked out to put us right.

From his high place he sent shaking on the earth; he saw and nations were suddenly moved: and the eternal mountains were broken, the unchanging hills were bent down; his ways are eternal.