The primary Old Testament lectionary reading today comes from Joshua 3 and involves the Israelites passing through the Jordan on dry ground.  I have already commented briefly on that text HERE.  In that reading the waters are “cut off” and “stand still.”  But, Psalm 114 presents the more poetic perspective, which I like better.  It actually appears that the waters of the Jordan (and the waters of the sea in the Exodus for that matter) were running away from the LORD.  In verses three and five the waters of the Jordan “turn around,” this is in parallel with the waters of the sea “fleeing” in the Exodus.  The trembling of the earth in verse 7 adds to the picture in the sense that the waters are running away not simply because God commanded, but more because they are afraid.  Very cool word picture since we typically think of water as inanimate. Check it out:

1 When Israel went out from Egypt,
the house of Jacob from a people of strange language,
2 Judah became God’s​​ sanctuary,
Israel his dominion.
3 The sea looked and fled;
Jordan turned back.
4 The mountains skipped like rams,
the hills like lambs.
5 Why is it, O sea, that you flee?
O Jordan, that you turn back?
6 O mountains, that you skip like rams?
O hills, like lambs?
7 Tremble, O earth, at the presence of the Lord,
at the presence of the God of Jacob,
8 who turns the rock into a pool of water,
the flint into a spring of water. (NRSV)