'Secret' in the Bible

Cursed be the man that maketh a graven or molten image, an abomination unto Jehovah, the work of the hands of the craftsman, and setteth it up in secret. And all the people shall answer and say, Amen.

Cursed be he that smiteth his neighbor in secret. And all the people shall say, Amen.

The secret things belong unto Jehovah our God; but the things that are revealed belong unto us and to our children for ever, that we may do all the words of this law.