And they rose early in the morning, and went out through the desert of Thecua: and as they were marching, Josaphat standing in the midst of them, said: Hear me, ye men of Juda, and all the inhabitants of Jerusalem: believe in the Lord your God, and you shall be secure: believe his prophets, and all things shall succeed well.
2 Chronicles 20:18 Then Josaphat, and Juda, and all the inhabitants of Jerusalem fell flat on the ground before the Lord, and adored him.
2 Chronicles 20:19 And the Levites of the sons of Caath, and of the sons of Core praised the Lord the God of Israel with a loud voice, on high.
2 Chronicles 20:20 And they rose early in the morning, and went out through the desert of Thecua: and as they were marching, Josaphat standing in the midst of them, said: Hear me, ye men of Juda, and all the inhabitants of Jerusalem: believe in the Lord your God, and you shall be secure: believe his prophets, and all things shall succeed well.
2 Chronicles 20:21 And he gave counsel to the people, and appointed the singing men of the Lord, to praise him by their companies, and to go before the army, and with one voice to say: Give glory to the Lord, for his mercy endureth for ever.
2 Chronicles 20:22 And when they began to sing praises, the Lord turned their ambushments upon themselves, that is to say, of the children of Ammon, and of Moab, and of mount Seir, who were come out to fight against Juda, and they were slain.
The verse centers on "all things", "rose", "early", "morning", "went", "through", "desert", and "thecua". It is saying that the verse draws attention to "all things" and "rose", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 19's "And the Levites of the sons of..." into verse 21's "And he gave counsel to the people...", so "all things" and "rose" belong inside that flow. In 2 Chronicles context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "all things" and "rose" with trust shaped by these words, not by a vague optimism outside the passage.