Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
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Ezra 10:9

Then all the men of Judah and Benjamin gathered themselves together to Jerusalem within the three days. It was the ninth month, on the twentieth day of the month; and all the people sat in the wide place in front of God’s house, trembling because of this matter, and because of the great rain.

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