Ecclesiastes 6:6

6:6 if he should live a thousand years twice, yet does not enjoy his prosperity.

For both of them die! ¹ 

Ecclesiastes 11:8

11:8 So, if a man lives many years, let him rejoice in them all,

but let him remember that the days of darkness ²  will be many – all that is about to come is obscure. ³ 

[6:6]  ¹ tn Heb “Do not all go to the same place?” The rhetorical question is an example of erotesis of positive affirmation, expecting a positive answer, e.g., Ps 56:13 [14] (see E. W. Bullinger, Figures of Speech, 947). It affirms the fact that both the miserly rich man who lives two thousand years, as well as the stillborn who never lived one day, both go to the same place – the grave. And if the miserly rich man never enjoyed the fruit of his labor during his life, his fate was no better than that of the stillborn who never had opportunity to enjoy any of the blessings of life. In a sense, it would have been better for the miserly rich man to have never lived than to have experienced the toil, anxiety, and misery of accumulating his wealth, but never enjoying any of the fruits of his labor.

[11:8]  ² tn The phrase “the days of darkness” refers to the onset of old age (Eccl 12:1-5) and the inevitable experience of death (Eccl 11:7-8; 12:6-7). Elsewhere, “darkness” is a figure of speech (metonymy of association) for death (Job 10:21-22; 17:13; 18:18).

[11:8]  ³ tn The term הֶבֶל (hevel) here means “obscure,” that is, unknown. This sense is derived from the literal concept of breath, vapor or wind that cannot be seen; thus, the idea of “obscure; dark; difficult to understand; enigmatic” (see HALOT 236–37 s.v. I הֶבֶל; BDB 210–11 s.v. I הֶבֶל). It is used in this sense in reference to enigmas in life (6:2; 8:10, 14) and the future which is obscure (11:8).