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

Leviticus 15:3

And this [is] the law of his uncleanness; whoever has a gonorrhœa out of his body, this is his uncleanness in him by reason of the issue, by which his body is affected through the issue: all the days of the issue of his body, by which his body is affected through the issue, there is his uncleanness.

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