Luke 12:3
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.
Cross-reference
Luke 8:17 repeats the same saying about nothing hidden that will not be known — a parallel within Luke's gospel.
Ecclesiastes 10:20 warns that bedroom whispers are carried by birds—directly parallel to Jesus saying private words will be proclaimed.
Matthew 10:27 commands proclaiming what is heard in the dark—the positive counterpart to inevitable exposure in Luke.
Job 22:14 claims God is hidden by clouds and does not see—contrasting with Jesus' assertion that nothing remains hidden.
Daniel 2:22 says God reveals deep and hidden things — same truth that concealed words will be made known.
Matthew 10:26 contains the identical saying about nothing hidden that will not be disclosed — a parallel version of this teaching.
Mark 4:22 states the same principle that hidden things are meant to be revealed — paralleling this lamp saying.
Matthew 12:36 says every careless word will be accounted for on judgment day—reinforcing that hidden words are revealed.
Job 20:27 says heavens will reveal iniquity—similar to hidden things being brought to light.