This phrase is an idiom.

If you say you know someone but not in the biblical sense, you mean you have not had sex with them

Usage notes: In the Bible, 'to know' someone meant to have sex with them.
'Did you know her then?' 'Yes, but not in the biblical sense.'
David: 'Did you know her then?'
Joseph: 'Yes, but not in the biblical sense.'
by lucasizle January 11, 2012
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to have sexual relations with; often used when asked if you "know" somebody. if you know someone in the biblical sense, you have had sex or sexual relations with them.
mike: so, how well do you know amy?
tommy: well i don't know her in the biblical sense or anything, but we've hung out a few times.
by atotheLI August 21, 2007
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To know someone in the biblical sense means that you have had sexual intercourse with him or her. It is a reference to the meaning of "know" in the Bible.
Man 1: What do you mean by "know in the biblical sense"?
Man 2: I've slept with her. We dated last year.
by A1988 June 11, 2012
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