Extended Strong's Hebrew Lexicon (Brown-Driver-Briggs based)
forever: enduring
Usage: : enduring/eternal 1) long duration, antiquity, futurity, for ever, ever, everlasting, evermore, perpetual, old, ancient, world 1a) ancient time, long time (of past) 1b) (of future) 1b1) for ever, always 1b2) continuous existence, perpetual 1b3) everlasting, indefinite or unending future, eternity