Passage
After this the children of Moab, and the children of Ammon, and with them of the Ammonites, were gathered together to fight against Josaphat.
After this the children of Moab, and the children of Ammon, and with them of the Ammonites, were gathered together to fight against Josaphat.
2 Chronicles 20:1 After this the children of Moab, and the children of Ammon, and with them of the Ammonites, were gathered together to fight against Josaphat.
2 Chronicles 20:2 And there came messengers, and told Josaphat, saying: There cometh a great multitude against thee from beyond the sea, and out of Syria, and behold they are in Asasonthamar, which is Engaddi.
2 Chronicles 20:3 And Josaphat being seized with fear betook himself wholly to pray to the Lord, and he proclaimed a fast for all Juda.
The verse centers on "after", "children", "moab", "ammon", "ammonites", "gathered", and "together". It is saying that the verse draws attention to "after" and "children", so its meaning should be read from those terms before moving to application.
The next verse adds "And there came messengers and told Josaphat...", so "after" and "children" should be read forward into that movement. In 2 Chronicles context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "after" and "children" with trust shaped by these words, not by a vague optimism outside the passage.