Levite Singers Lead Judah's Army in Praiseby emmanuel_higgins

Psalms 136:2

O give thanks unto the God of gods: for his mercy endureth for ever.

Give thanks to the God of gods as the supreme God above all. His mercy endures forever, and that enduring mercy is the ground of the thanksgiving called for. It was sung as a hymn by the returned exiles, joining their voices in praise to God. In that hymn they praised Him for His merciful care toward them in their low estate, and for His deliverance and protection of Israel.