Reference

Ecclesiastes 1:13

And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven: this sore travail hath God given to the sons of man to be exercised therewith.
11

There is no remembrance of former things; neither shall there be any remembrance of things that are to come with those that shall come after.

12

I the Preacher was king over Israel in Jerusalem.

13

And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven: this sore travail hath God given to the sons of man to be exercised therewith.

14

I have seen all the works that are done under the sun; and, behold, all is vanity and vexation of spirit.

15

That which is crooked cannot be made straight: and that which is wanting cannot be numbered.

Counter-Arguments

The strongest case that this verse does not belong in this theme.

Access to God (Veil Removed)

This verse describes a human endeavor to understand the world through wisdom and the toil associated with it, without any mention of a veil, a sanctuary, a high priest, or any concept related to access to a divine presence.