Psalm 114:1
114:1 When Israel went out of Egypt, the house of Jacob from a
      people of {a} strange language;

      (a) Or, barbarous.

Psalm 114:2
114:2 Judah was his {b} sanctuary, [and] Israel his dominion.

      (b) The whole people were witnesses to his holy majesty in
          adopting them, and of his mighty power in delivering
          them.

Psalm 114:4
114:4 The {c} mountains skipped like rams, [and] the little
      hills like lambs.

      (c) Seeing that these dead creatures felt God's power and
          after a sort saw it, much more his people ought to
          consider it, and glorify him for the same.

Psalm 114:7
114:7 Tremble, thou {d} earth, at the presence of the Lord, at
      the presence of the God of Jacob;

      (d) Ought then his people to be insensible when they see
          his power and majesty?

Psalm 114:8
114:8 Which {e} turned the rock [into] a standing water, the
      flint into a fountain of waters.

      (e) That is, miraculously caused water to come out of the
          rock in great abundance, Exodus 17:6.