What does 2 Kings 11:4 mean?

In the seventh year, Jehoiada the priest called together the commanders of the guards and brought them into the temple. He made them swear an oath, then showed them Joash. 2 Kings 11:4 - Modern Text Bible

(Jehoiada, the high priest, gathers trusted military leaders, swears them to secrecy, and reveals the hidden king, setting up a plan to restore the rightful ruler.)