'Secret' in the Bible

the spies spotted a man leaving the city. They said to him, "If you show us a secret entrance into the city, we will reward you."

He showed them a secret entrance into the city, and they put the city to the sword. But they let the man and his extended family leave safely.

But he went back once he reached the carved images at Gilgal. He said to Eglon, "I have a secret message for you, O king." Eglon said, "Be quiet!" All his attendants left.

They hid in the bedroom and then she said to him, "The Philistines are here, Samson!" He snapped the bowstrings as easily as a thread of yarn snaps when it is put close to fire. The secret of his strength was not discovered.

She said to him, "How can you say, 'I love you,' when you will not share your secret with me? Three times you have deceived me and have not told me what makes you so strong."

Finally he told her his secret. He said to her, "My hair has never been cut, for I have been dedicated to God from the time I was conceived. If my head were shaved, my strength would leave me; I would become weak, and be just like all other men."

When Delilah saw that he had told her his secret, she sent for the rulers of the Philistines, saying, "Come up here again, for he has told me his secret." So the rulers of the Philistines went up to visit her, bringing the silver in their hands.