'Hidden' in the Bible

Solomon answered all her questions; nothing was hidden from him which he did not make clear to her.

Joash was hidden with them in the house (temple) of God for six years, and Athaliah reigned over the land.

Now after the death of Jehoiada [the priest, who had hidden Joash], the officials of Judah came and bowed down to King Joash; then the king listened to them.