Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
LXX

Judges 20:23

And the children of Israel went up, and wept before the Lord till evening, and enquired of the Lord, saying, Shall we again draw nigh to battle with our brethren the children of Benjamin? and the Lord said, Go up against them.

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