Eternity

Part of speech: noun (n.)

1. Infinite duration, without beginning in the past or end in the future; also, duration without end in the future; endless time. The high and lofty One, that inhabiteth eternity. Is. lvii. 15.

2. Condition which begins at death; immortality. Thou know'st 't is common; all that lives must die, Passing through nature to eternity. Shak.