Jotham was 25 years old when he began his reign, and he reigned for sixteen years in Jerusalem. His mother was Zadok's daughter Jerusha.

He practiced what the LORD considered to be right, just as his father Uzziah had done, even though he did not enter the Temple. Nevertheless, the people continued acting corruptly.

Jotham constructed the Upper Gate of the LORD's Temple and did extensive work on the wall of Ophel.

He also built cities in the hill country of Judah, along with fortresses and guard towers in the forests.

He launched a military excursion against the king of the Ammonites and defeated him. As a result, that year the Ammonites paid 100 talents of silver in tribute, as well as 10,000 kors of wheat and 10,000 kors of barley. The Ammonites continued to pay this same amount in tribute over the following two years.

Jotham grew in power because he had determined to live his life in the presence of the LORD his God.

The rest of the accomplishments of Jotham's reign, including all of his military exploits and campaigns, are recorded in the book of the Kings of Israel and Judah.

He started his reign at the age of 25 years and he reigned for sixteen years in Jerusalem.

Then Jotham died, as had his fathers, and he was buried in the City of David. His son Ahaz became king in his place.