Commentaries:
Jamieson, Fausset, and Brown
a testimony--The feasts, especially the passover, attested God's relation to His people.
Joseph--for Israel (Psalms 80:1).
went out through--or, "over," that is, Israel in the exodus.
I heard--change of person. The writer speaks for the nation.
language--literally, "lip" (Psalms 14:1). An aggravation or element of their distress that their oppressors were foreigners (Deuteronomy 28:49).
Other commentary entries containing this verse:
2 Samuel 19:20
Psalms 114:1-4
Mark 13:27
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