Passage
And they swear to Jehovah with a loud voice, and with shouting, and with trumpets, and with cornets,
And they swear to Jehovah with a loud voice, and with shouting, and with trumpets, and with cornets,
2 Chronicles 15:12 and they enter into a covenant to seek Jehovah, God of their fathers, with all their heart, and with all their soul,
2 Chronicles 15:13 and every one who doth not seek for Jehovah, God of Israel, is put to death, from small unto great, from man unto woman.
2 Chronicles 15:14 And they swear to Jehovah with a loud voice, and with shouting, and with trumpets, and with cornets,
2 Chronicles 15:15 and rejoice do all Judah concerning the oath, for with all their heart they have sworn, and with all their good-will they have sought Him, and He is found of them, and Jehovah giveth rest to them round about.
2 Chronicles 15:16 And also Maachah, mother of Asa the king--he hath removed her from <FI>being<Fi> mistress, in that she hath made for a shrine a horrible thing, and Asa cutteth down her horrible thing, and beateth <FI>it<Fi> small, and burneth <FI>it<Fi> by the brook Kidron:
The verse centers on "swear", "jehovah", "loud", "voice", "shouting", "trumpets", and "cornets". It is saying that the verse draws attention to "swear" and "jehovah", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 13's "and every one who doth not seek..." into verse 15's "and rejoice do all Judah concerning the...", so "swear" 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 "swear" and "jehovah" with trust shaped by these words, not by a vague optimism outside the passage.