Verse 2

Judah was his sanctuary, and Israel his dominion.

Judah — Or Israel, one tribe being put for all. Judah he mentions as the chief of all the tribes.

Verse 4

The mountains skipped like rams, and the little hills like lambs.

The mountains — Horeb and Sinai, two tops of one mountain, and other neighbouring mountains.

Verse 7

Tremble, thou earth, at the presence of the Lord, at the presence of the God of Jacob;

Tremble — The mountains did more than what was fit at the appearance of the great God.