Psalms 37:18

Jehovah knoweth, and the Omniscient is also the All-Sovereign (see on Psalms 1:6), the days of the perfect: each fraction of the lives of those who are devoted to Him (see on Psalms 15:2), with all that it brings. Cp. my times(Psalms 31:15); Matthew 6:8.

and their inheritance shall be for ever The righteous man lives in his posterity, who continue in possession of the ancestral inheritance, while the posterity of the wicked perish (Psalms 37:28; Psalms 37:38; Psalms 34:16). The Psalmist's view is still limited to earth (cp. Psalms 37:19). The eternal inheritance reserved in heaven is beyond his horizon.