The son and successor of Jotham, Ahaz was eleventh king of Judah. His sixteen year rule was an epitome of evil. He gave himself up to a life of idolatory, sacrificing his own son to pagan gods. As a result, Ahaz was handed over to the Arameans, who defeated him and took many of his subjects prisoner.
Not learning his lesson, Ahaz continued in his evil ways. And consequently his people continued to suffer. In a single day, 120,000 of his soldiers including his own son, were slaughtered by Pekah, king of Israel.
In his time of trouble King Ahaz became even more unfaithful to the LORD . He offered sacrifices to the gods of Damascus, who had defeated him; for he thought, "Since the gods of the kings of Aram have helped them, I will sacrifice to them so they will help me." But they were his downfall and the downfall of all Israel.
(2 Chronicles 28:22-23)
Ahaz died at the age of 35 and was succeeded by his son Hezekiah.