2 Chronicles 20:3-4

Amplified Bible

³ Then Jehoshaphat was afraid and set himself [determinedly, as his vital need] to seek the Lord; and he proclaimed a fast throughout all Judah. ⁴ So [the people of] Judah gathered together to seek help from the Lord; indeed they came from all the cities of Judah to seek the Lord [longing for Him with all their heart].