Numbers 5:13

by sleeping with another man, and it is concealed from her husband and her impurity is undetected (since there is no witness against her and she was not caught in the act),

Berean Standard Bible
Other translations

King James Version

And a man lie with her carnally, and it be hid from the eyes of her husband, and be kept close, and she be defiled, and there be no witness against her, neither she be taken with the manner;

World English Bible

and a man lies with her carnally, and it is hidden from the eyes of her husband and this is kept concealed, and she is defiled, there is no witness against her, and she isn’t taken in the act;

American Standard Version

and a man lie with her carnally, and it be hid from the eyes of her husband, and be kept close, and she be defiled, and there be no witness against her, and she be not taken in the act;

Geneva Bible 1599

So that an other man lie with her fleshly, and it bee hid from the eyes of her husband, and kept close, and yet she be defiled, and there be no witnesse against her, neither she taken with the maner,

Darby Translation

and a man lie with her carnally, and it be hid from the eyes of her husband, and she be defiled in secret, and there be no witness against her, and she have not been caught;

Young's Literal Translation

and a man hath lain with her [with] the seed of copulation, and it hath been hid from the eyes of her husband, and concealed, and she hath been defiled, and there is no witness against her, and she hath not been caught,

Bible in Basic English

By taking as her lover another man, and keeps it secret so that her husband has no knowledge of it, and there is no witness against her, and she is not taken in the act;

In context

12“Speak to the Israelites and tell them that if any man’s wife goes astray and is unfaithful to him

14and if a feeling of jealousy comes over her husband and he suspects his wife who has defiled herself—or if a feeling of jealousy comes over him and he suspects her even though she has not defiled herself—

Read Numbers 5