I can't believe I never understood this before, but it dawned on me last night.
"Now Adam knew his wife..."
Whenever the Scripture speaks of sex, it uses the word 'know'. It also says that whenever one 'knows' a person, those two people are made into one. Paul said this has to do with Christ and the Church. The Church 'know' Jesus and become one Spirit with Him.
I wonder if this is the same sort of 'knowing' Jesus had in mind when He said, "Many will say to Me in that day, 'Lord, Lord, have we not prophesied in Your name, cast out demons in Your name and done many mighty works in Your name?' And then I will declare to them, 'I never knew you; depart from me, you workers of lawlessness.' "
Who is lawless but the ones who have not had the Law written on their hearts and minds? And who are they but those devoid of the Spirit of Christ?