Jehoshaphat, while declining to renounce the alliance with Israel (compare the 2 Kings 3:7 note), was careful to show that he had no sympathy with idolatry, and was determined to keep his people, so far as he possibly could, free from it. He therefore personally set about a second reformation, passing through the whole land, from the extreme south to the extreme north 2 Chronicles 13:19.

From Beer-sheba to Mount Ephraim - Before the separation of the ten tribes, in speaking of the extent of the land it was said, From Dan to Beer-sheba; but since that event, the kingdom of Judah was bounded on the south by Beer-sheba, and on the north by the mountains of Ephraim. This shows that Jehoshaphat had gone through all his territories to examine every thing himself, to see that judgment and justice were properly administered among the people.

And Jehoshaphat dwelt at Jerusalem,.... And went out no more to Samaria, nor concerned himself about the affairs of Israel, but attended to his own:

and he went out again through the people; took a tour throughout his dominions now, in his own person, as before by his princes, with the priests and Levites:

from Beersheba to Mount Ephraim; Beersheba was the southern boundary of the land of Judah, and Mount Ephraim lay to the north, and was the northern boundary of it since the division of the kingdom:

and brought them back to the Lord God of their fathers; from idolatry to the pure worship of God, such who had relapsed since the first reformation, or had not been influenced by it.

Jehoshaphat's further arrangements for the revival of the Jahve-worship, and the establishment of a proper administration of justice. - The first two clauses in 2 Chronicles 19:4 are logically connected thus: When Jehoshaphat (after his return from the war) sat (dwelt) in Jerusalem, he again went forth (ויּצא ויּשׁב are to be taken together) among the people, from Beersheba, the southern frontier (see 1 Chronicles 21:2), to Mount Ephraim, the northern frontier of the kingdom of Judah, and brought them back to Jahve, the God of the fathers. The "again" (ישׁב) can refer only to the former provision for the instruction of the people, recorded in 2 Chronicles 17:7.; all that was effected by the commission which Jehoshaphat had sent throughout the land being regarded as his work. The instruction of the people in the law was intended to lead them back to the Lord. Jehoshaphat now again took up his work of reformation, in order to complete the work he had begun, by ordering and improving the administration of justice.

And Jehoshaphat dwelt at Jerusalem: and he went out again {b} through the people from Beersheba to mount Ephraim, and brought them back unto the LORD God of their fathers.

(b) He visited all his country and brought his people from idolatry to the knowledge of the true God.

19:4 Through - Through the whole kingdom, whereof these were the two bounds. And brought - Such of them as had revolted from God to idols, he reclaimed by his counsel and example, and by the instructions of the Levites and priests, whom he carried with him. Many, probably, had revolted to idolatry, when they saw their king so intimate with idolaters. Therefore he thought himself doubly obliged to do all he could to reduce them. If we truly repent of sin, we shall do our utmost to repair the damage we have done to religion, or the souls of others.

he went...: Heb. he returned and went out

4. he went out again through the people-This means his reappointing the commissioners of public instruction (2Ch 17:7-9), perhaps with new powers and a larger staff of assistants to overtake every part of the land. The complement of teachers required for that purpose would be easily obtained because the whole tribe of Levites was now concentrated within the kingdom of Judah.

19:1-11 Jehoshaphat visits his kingdom. - Whenever we return in peace to our houses, we ought to acknowledge God's providence in preserving our going out and coming in. And if we have been kept through more than common dangers, we are, in a special manner, bound to be thankful. Distinguishing mercies lay us under strong obligations. The prophet tells Jehoshaphat he had done very ill in joining Ahab. He took the reproof well. See the effect the reproof had upon him. He strictly searched his own kingdom. By what the prophet said, Jehoshaphat perceived that his former attempts for reformation were well-pleasing to God; therefore he did what was then left undone. It is good when commendations quicken us to our duty. There are diversities of gifts and operations, but all from the same Spirit, and for the public good; and as every one has received the gift, so let him minister the same. Blessed be God for magistrates and ministers, scribes and statesmen, men of books, and men of business. Observe the charge the king gave. They must do all in the fear of the Lord, with a perfect, upright heart. And they must make it their constant care to prevent sin, as an offence to God, and what would bring wrath on the people.