Chronicles II 20:35

35 And afterwards Josaphat king of Juda entered into an alliance with Ochozias king of Israel, (now this was an unrighteous man,)

Chronicles II 20:35 Meaning and Commentary

2 Chronicles 20:35

And after this did Jehoshaphat king of Judah join himself with
Ahaziah king of Israel
Meaning, not after the invasion of the Moabites and the slaughter of them, but after Jehoshaphat returned from Ramothgilead, when he was reproved by a prophet for helping the ungodly, ( 2 Chronicles 19:1 2 Chronicles 19:2 ) so that it was a great aggravation of his folly and weakness, that after that, and quickly after that, he should join himself to a wicked prince, though not in war, but in trade; for so it must be, since Ahaziah reigned but two years, and those not complete, see ( 1 Kings 22:51 ) , but is here related, that Jehoshaphat's weaknesses and blemishes might be laid together:

who did very wickedly;
that is, Ahaziah, who walked in the ways of Ahab his father, and of Jezebel his mother, and of Jeroboam the son of Nebat, ( 1 Kings 22:52 ) .

Chronicles II 20:35 In-Context

33 nevertheless the high places yet remained; and as yet the people did not direct their heart to the Lord God of their fathers.
34 And the rest of the acts of Josaphat, the first and the last, behold, they are written in the history of Jeu of Anani, who wrote the book of the kings of Israel.
35 And afterwards Josaphat king of Juda entered into an alliance with Ochozias king of Israel, (now this was an unrighteous man,)
36 by acting and going to him, to build ships to go to Tharsis: and he built ships in Gasion Gaber.
37 And Eliezer thee of Dodia of Marisa prophesied against Josaphat, saying, Forasmuch as thou hast allied thyself with Ochozias, the Lord has broken thy work, and thy vessels have been wrecked. And they could not go to Tharsis.

The Brenton translation of the Septuagint is in the public domain.