Commentaries:
Jamieson, Fausset, and Brown
the Lord went before them—by a visible token of His presence, the Shekinah, in a majestic cloud (Psalms 78:14; Nehemiah 9:12; I Corinthians 10:1), called "the angel of God" (Exodus 14:19; Exodus 23:20-23; Psalms 99:6-7; Isaiah 63:8-9).
Other Jamieson, Fausset, and Brown entries containing Exodus 13:21:
Exodus 13:17
Exodus 14:19
1 Kings 8:12
Psalms 105:39
Isaiah 4:5
Isaiah 14:14
Isaiah 14:31
Micah 2:13
1 Corinthians 10:1
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