I am the Jehovah

“Ye shall keep my sabbaths, and reverence my sanctuary: I am the Jehovah.”

Leviticus 26:2 

"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 applies the sanctuary in the following clause to the jubilee year, which is said to be holy (Lev. 26:12). Supposing that this refers unto and stands in strict connection with the laws of the preceding chapter, concerning the sabbatical (Lev. 25:1), and jubilee years (Lev. 25:8).

“And reverence my sanctuary”: 

By attending in it, and on the worship in it, with reverence and godly fear (see Lev. 19:30).

“I am the Jehovah”: 

Who had a right to such religious worship, and to command such things, in which he ought to be obeyed, his sabbaths kept, and sanctuary reverenced. “And reverence my sanctuary”, by attending in it, and on the worship in it, with reverence and godly fear.