Exodus 34:3

And no man shall come up with thee, neither let any man be seen throughout all the mount; neither let the flocks nor herds feed before that mount.

Cross-references

Exodus 19:12 earlier forbids anyone to touch the mountain, reinforcing the same prohibition that no one accompany Moses.

Exodus 19:13 adds the penalty for touching the mountain and the trumpet signal, expanding the boundary rules.

Exodus 19:21 warns the people not to break through to gaze, a related prohibition to the command that no one be seen.

Hebrews 12:20 recalls the Sinai command that animals must not touch the mountain — a parallel to the same restriction here.