Ecclesiastes 12:13-14 – “Let us hear the conclusion of the whole matter: Fear God, and keep his commandments: for this is the whole duty of man. For God shall bring every work into judgment, with every secret thing, whether it be good, or whether it be evil.”
Judgment is coming and every secret thing will be weighed. Good cross references are:
Luke 8:17 – “For nothing is secret, that shall not be made manifest; neither any thing hid, that shall not be known and come abroad.”
Revelation 20:11-15 – “And I saw a great white throne, and him that sat on it, from whose face the earth and the heaven fled away; and there was found no place for them. And I saw the dead, small and great, stand before God; and the books were opened: and another book was opened, which is the book of life: and the dead were judged out of those things which were written in the books, according to their works. And the sea gave up the dead which were in it; and death and hell delivered up the dead which were in them: and they were judged every man according to their works. And death and hell were cast into the lake of fire. This is the second death. And whosoever was not found written in the book of life was cast into the lake of fire.”
Romans 2:16 – “In the day when God shall judge the secrets of men by Jesus Christ according to my gospel.”