Passage
And Asa in the thirty and ninth year of his reign was diseased in his feet, until his disease was exceeding great: yet in his disease he sought not to the LORD, but to the physicians.
And Asa in the thirty and ninth year of his reign was diseased in his feet, until his disease was exceeding great: yet in his disease he sought not to the LORD, but to the physicians.
2 Chronicles 16:10 Then Asa was wroth with the seer, and put him in a prison house; for he was in a rage with him because of this thing. And Asa oppressed some of the people the same time.
2 Chronicles 16:11 And, behold, the acts of Asa, first and last, lo, they are written in the book of the kings of Judah and Israel.
2 Chronicles 16:12 And Asa in the thirty and ninth year of his reign was diseased in his feet, until his disease was exceeding great: yet in his disease he sought not to the LORD, but to the physicians.
2 Chronicles 16:13 And Asa slept with his fathers, and died in the one and fortieth year of his reign.
2 Chronicles 16:14 And they buried him in his own sepulchres, which he had made for himself in the city of David, and laid him in the bed which was filled with sweet odours and divers kinds of spices prepared by the apothecaries’ art: and they made a very great burning for him.
The verse centers on "thirty", "ninth", "year", "reign", "diseased", "feet", and "until". It is saying that the verse draws attention to "thirty" and "ninth", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 11's "And behold the acts of Asa first..." into verse 13's "And Asa slept with his fathers and...", so "thirty" and "ninth" 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 "thirty" and "ninth" with trust shaped by these words, not by a vague optimism outside the passage.