'Secret' in the Bible

‘Cursed is the man who makes a carved or cast image (idol), a repulsive thing to the Lord, the work of the hands of the artisan, and sets it up in secret.’ All the people shall answer and say, ‘Amen.’

“The secret things belong to the Lord our God, but the things which are revealed and disclosed belong to us and to our children forever, so that we may do all of the words of this law.

It is not [a secret hidden] in heaven, that you should say, ‘Who will go up to heaven for us and bring it to us, so that we may hear it and obey it?’