Passage
And the days that he reigned over Israel, were forty years: in Hebron he reigned seven years, and in Jerusalem three and thirty years.
And the days that he reigned over Israel, were forty years: in Hebron he reigned seven years, and in Jerusalem three and thirty years.
1 Chronicles 29:25 And the Lord magnified Solomon over all Israel: and gave him the glory of a reign, such as no king of Israel had before him.
1 Chronicles 29:26 So David the son of Isai reigned over all Israel.
1 Chronicles 29:27 And the days that he reigned over Israel, were forty years: in Hebron he reigned seven years, and in Jerusalem three and thirty years.
1 Chronicles 29:28 And he died in a good age, full of days, and riches, and glory. And Solomon his son reigned in his stead.
1 Chronicles 29:29 Now the acts of king David first and last are written in the book of Samuel the seer, and in the book of Nathan the prophet, and in the book of Gad the seer:
The verse centers on "days", "reigned", "over", "israel", "forty", "years", and "hebron". It is saying that the verse draws attention to "days" and "reigned", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 26's "So David the son of Isai reigned..." into verse 28's "And he died in a good age...", so "days" and "reigned" belong inside that flow. In 1 Chronicles context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "days" and "reigned" with trust shaped by these words, not by a vague optimism outside the passage.