1 Samuel 7:6

and Mizpah, for he said, “May Yahweh watch between you and me when we are absent one from the other.

Thus Samuel judged Israel all the days of his life.

And Jehoshaphat was afraid and set his face to seek Yahweh, and called for a fast throughout all Judah.

Then I called for a fast there at the river of Ahava, that we might humble ourselves before our God to seek from Him a direct journey for us, our little ones, and all our possessions.

Now it happened in the fifth year of Jehoiakim the son of Josiah, king of Judah, in the ninth month, that all the people in Jerusalem and all the people who came from the cities of Judah to Jerusalem called for a fast before Yahweh.