Commentaries:
Jamieson, Fausset, and Brown
for . . . glory of thy name [and for] thy name's sake—both mean for illustrating Thy attributes, faithfulness, power, etc.
purge . . . sins—literally, "provide atonement for us." Deliverance from sin and suffering, for their good and God's glory, often distinguish the prayers of Old Testament saints (compare Ephesians 1:7).
Other Jamieson, Fausset, and Brown entries containing Psalms 79:9:
Psalms 79:1
Jeremiah 14:7
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