Charles Ellicott Commentary Ecclesiastes 11:8

"Yea, if a man live many years, let him rejoice in them all; but let him remember the days of darkness, for they shall be many. All that cometh is vanity." — Ecclesiastes 11:8 (ASV)

Days of darkness. —Psalms 88:12; Psalms 143:3; Job 10:21. (Compare to also Psalms 56:13; Job 33:30.)