The Lord knoweth the days of the upright
Not only how long they shall live, and so fill up their days, the
number of them, as Aben Ezra interprets it; but the nature of
their days, whether prosperous or adverse; and causes both to
work together for their good; and he knows the work of their
days, as Jarchi explains it, the actions done by them in faith
and love, and to his honour and glory, and which he approves and
accepts of in Christ; see ( Psalms 1:6 ) ;
and their inheritance shall be for ever;
in heaven, which is an eternal and never fading one, ( Hebrews 9:15
) ( 1 Peter
1:4 ) ; and therefore they ought not to fret and be envious.