2 Chronicles 20:3

3 And Jehoshaphat feareth, and setteth his face to seek to Jehovah, and proclaimeth a fast over all Judah;

2 Chronicles 20:3 Meaning and Commentary

2 Chronicles 20:3

And Jehoshaphat feared
Exceedingly, as the Targum adds, not merely because of the number of his enemies, for he had forces enough to go forth against them, see ( 2 Chronicles 17:14-19 ) , but chiefly because the Lord had told him that wrath was upon him from him, ( 2 Chronicles 19:2 ) and he might fear that this was the time for the execution of it: and set himself to seek the Lord;
by prayer and supplication, with all seriousness, fervour, and constancy: and proclaimed a fast throughout all Judah;
a day of humiliation and mourning for sin before the Lord; when they were ordered to abstain from bodily food and labour, that they might be fit and more at leisure for spiritual exercises.

2 Chronicles 20:3 In-Context

1 And it cometh to pass after this, the sons of Moab have come in, and the sons of Ammon, and with them of the peoples, against Jehoshaphat to battle.
2 And they come in and declare to Jehoshaphat, saying, `Come against thee hath a great multitude from beyond the sea, from Aram, and lo, they [are] in Hazezon-Tamar -- it [is] En-Gedi.'
3 And Jehoshaphat feareth, and setteth his face to seek to Jehovah, and proclaimeth a fast over all Judah;
4 and Judah is gathered to inquire of Jehovah; also, from all the cities of Judah they have come in to seek Jehovah.
5 And Jehoshaphat standeth in the assembly of Judah and Jerusalem, in the house of Jehovah, at the front of the new court,
Young's Literal Translation is in the public domain.