20 (A)The Lord came down on Mount Sinai, to the top of the mountain; and the Lord called Moses to the top of the mountain, and Moses went up. 21 Then the Lord spoke to Moses, “Go down, (a)warn the people, so that (B)they do not break through to the Lord to gaze, and many of them (b)perish.

Footnotes:

a. Exodus 19:21: ['Lit ', testify to]
b. Exodus 19:21: ['Lit ', fall]