"yada"
"yada" is the Hebrew word for "intercourse." Its equivelant tranlates into
the English word "know." The Bible says, "when Adam 'knew' Eve they begat Cain."
The sexual union of a man and his wife becoming one depicts what kind of union
exists when a man becomes one with God through the Word of God. That's the
essence of the profound statement, "We need to know the Lord."