Therefore whatsoever ye have spoken in darkness shall be heard in the light; and that which ye have spoken in the ear in closets shall be proclaimed upon the housetops.
before vowels crypt-, word-forming element meaning “secret” or “hidden, not evident or obvious,” used in forming English words at least since 1760, from Latinized form of Greek kryptos “hidden, concealed, secret”
In 19c. often of secret religious faith; from 1870s in scientific words; since c. 1945 typically of hidden political loyalties.
1640s, “secret or occult language,” from crypto- “secret, hidden” + -ology. From 1945 as “science of secret characters or codes.”