Reference

2 Kings 16:18

And the covert for the sabbath that they had built in the house, and the king’s entry without, turned he from the house of the Lord for the king of Assyria.
16

Thus did Urijah the priest, according to all that king Ahaz commanded.

17

And king Ahaz cut off the borders of the bases, and removed the laver from off them; and took down the sea from off the brasen oxen that were under it, and put it upon a pavement of stones.

18

And the covert for the sabbath that they had built in the house, and the king’s entry without, turned he from the house of the Lord for the king of Assyria.

19

Now the rest of the acts of Ahaz which he did, are they not written in the book of the chronicles of the kings of Judah?

20

And Ahaz slept with his fathers, and was buried with his fathers in the city of David: and Hezekiah his son reigned in his stead.

Counter-Arguments

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

Seventh-Day Sabbath

The verse mentions "the sabbath" but provides no information about it being the seventh day or a rest day. It only refers to a physical structure ("the covert for the sabbath") associated with the temple that was removed, without defining the nature or timing of the sabbath itself.