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19 And David, desiring directions from the Lord, said, Am I to go up against the Philistines? will you give them up into my hands? And the Lord said, go up, for I will certainly give up the Philistines into your hands.
21 For the Lord will come up as on Mount Perazim, he will be moved to wrath as in the valley of Gibeon; so that he may do his work--strange is his work; and give effect to his act--unnatural is his act.