Shared ground

This verse functions as the formal opening line of Jotham’s reign. It gives the standard facts Chronicles often uses to mark a new king: his age when he began to rule, the total length of his reign, and Jerusalem as his ruling center.

It also names his mother (Jerushah) and identifies her father (Zadok). In Chronicles, these family links are not filler; they help locate the king within recognized households and remembered history.

Where interpretation differs

Two details can raise questions.

First, “began to reign” might refer to the start of Jotham’s sole rule, or it might include a period of shared rule with the previous king. The verse itself does not spell out whether a shared rule is involved; it simply gives the regnal formula.

Second, “Zadok” could refer to a well-known Zadok associated with priestly history, or it could be a different person with the same name. The verse identifies Jerushah’s father but does not provide enough detail to settle which Zadok is meant.

Why the disagreement exists The disagreements come from what the verse does not specify. Regnal summaries compress time and relationships into brief statements, so readers try to fill in gaps by comparing other passages (like the parallel in 2 Kings 15:32) or by using broader patterns in Judah’s royal history.

What this passage clearly contributes Explicitly, the verse anchors Jotham in Judah’s royal timeline: he was 25 at accession, ruled 16 years, ruled “in Jerusalem,” and his mother was Jerushah, daughter of Zadok. Theologically by implication (not stated as a direct claim), the verse supports Chronicles’ larger interest in ordered succession tied to Jerusalem and identifiable family lines, especially as the book repeatedly keeps attention on the Davidic capital and its institutions.