a relative adverb signifying "as," or "how," is used in 2 Corinthians 5:19 to introduce the statement "that God was ...," and rendered "to wit," lit., "how."
"to know, to make known," is rendered "we do (you) to wit" in 2 Corinthians 8:1 , AV, RV, "we make known (to you)." See KNOW , No. 8.
Note: In Romans 8:23 the italicized words "to wit" are added to specify the particular meaning of "adoption" there mentioned.