Moses
Leviticus 26:2ESV·traditional attribution

You shall keep my Sabbaths and reverence my sanctuary: I am the LORD.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. The inculcating of those precepts of the law which were of the greatest consequence, and by which were of the greatest consequence, and by which especially their obedience would be tried, Lev 26:1, Lev 26:2. They are the abstract of the second and fourth commandments, which, as they are by much the largest in the decalogue, so they are most frequently insisted...

Commenting on Leviticus 26:1-13

John Gill Reformed Baptist @doctorgill

Ye shall keep my sabbaths,.... The seventh day sabbaths, and the seventh year sabbaths; especially the former are meant, in which religious worship was given to the one true and living God, and therefore the observance of them is strictly enjoined; and hence this law follows closely upon the former, though Aben Ezra restrains it to the sabbatical years, or seventh year sabbaths, as he...

Jamieson-Fausset-Brown Reformed @jfbcommentary

Ye shall keep my sabbaths, and reverence my sanctuary--Very frequently, in this Book of the Law, the Sabbath and the sanctuary are mentioned as antidotes to idolatry.