Verse 1

When Israel. Compare Exodus 13:3.

Egypt. Not Babylon. The Psalm not post-exilic.

Jacob. See notes on Genesis 32:28; Genesis 43:6; Genesis 46:27, Genesis 46:28.

Verse 2

was = became. See note on Genesis 1:2.

Verse 3

The sea. Compare Exodus 14:21.

Jordan. Compare Joshua 3:13.

Verse 5

What. ? Figure of speech Erotesis. App-6.

Verse 7

the Lord. Hebrew Adon. App-4.

GOD. Hebrew Eloah. App-4.

Verse 8

turned = changed.

standing = pool.