Exodus 19:11

19:11 and be ready for the third day, for on the third day the Lord will come down on Mount Sinai in the sight of all the people.

Nehemiah 9:13

9:13 “You came down on Mount Sinai and spoke with them from heaven. You provided them with just judgments, true laws, and good statutes and commandments.

Psalms 81:7

81:7 In your distress you called out and I rescued you.

I answered you from a dark thundercloud. ¹ 

I tested you at the waters of Meribah. ²  (Selah)

[81:7]  ¹ tn Heb “I answered you in the hidden place of thunder.” This may allude to God’s self-revelation at Mount Sinai, where he appeared in a dark cloud accompanied by thunder (see Exod 19:16).

[81:7]  ² sn The name Meribah means “strife.” Two separate but similar incidents at the place called Meribah are recorded in the Pentateuch (Exod 17:1-7; Num 20:1-13). In both cases the Israelites complained about lack of water and the Lord miraculously provided for them.