For the Lord
'Adonay (ad-o-noy')
the Lord (used as a proper name of God only) -- (my) Lord.
will not cast off
zanach (zaw-nakh')
cast away (off), remove far away (off).
for ever
`owlam (o-lawm')
concealed, i.e. the vanishing point; generally, time out of mind (past or future), i.e. (practically) eternity; frequentatively, adverbial (especially with prepositional prefix) always
