Passage
And they sware unto Jehovah with a loud voice, and with shouting, and with trumpets, and with cornets.
And they sware unto Jehovah with a loud voice, and with shouting, and with trumpets, and with cornets.
2 Chronicles 15:12 And they entered into the covenant to seek Jehovah, the God of their fathers, with all their heart and with all their soul;
2 Chronicles 15:13 and that whosoever would not seek Jehovah, the God of Israel, should be put to death, whether small or great, whether man or woman.
2 Chronicles 15:14 And they sware unto Jehovah with a loud voice, and with shouting, and with trumpets, and with cornets.
2 Chronicles 15:15 And all Judah rejoiced at the oath; for they had sworn with all their heart, and sought him with their whole desire; and he was found of them: and Jehovah gave them rest round about.
2 Chronicles 15:16 And also Maacah, the mother of Asa the king, he removed from being queen, because she had made an abominable image for an Asherah; and Asa cut down her image, and made dust of it, and burnt it at the brook Kidron.
The verse centers on "sware", "jehovah", "loud", "voice", "shouting", "trumpets", and "cornets". It is saying that the verse draws attention to "sware" and "jehovah", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 13's "and that whosoever would not seek Jehovah..." into verse 15's "And all Judah rejoiced at the oath...", so "sware" and "jehovah" 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 "sware" and "jehovah" with trust shaped by these words, not by a vague optimism outside the passage.