King Hezekiah could have been just like his father, King Ahaz. But influences in Hezekiah’s life prevented him from being as wicked as his father…perhaps his father’s example could have even been one of those influences.
We see King Ahaz as being a man who, as Dr. Jerald Daffe states, is “a father of unparalleled wickedness (Daffe, biblestudytools.com).” Ahaz abandons Yahweh completely, eventually stripping the Temple’s furnishing and using the Temple for the worship of other gods, and calls for child sacrifice. Hezekiah had at least one brother who was put up on the sacrificial altar. Hezekiah could have followed in his father’s footsteps, but more likely was keenly aware of and/or sickened by his father’s wickedness. When King Ahaz died, he was considered too evil and too much of a disgrace in the hearts of the people of Judah to have been buried with the kings. If anything, Hezekiah would not have wanted that same legacy for himself.
Hezekiah was in the lineage of David through his mother, and probably learned of David’s legacy and the scriptures through his mother and more likely his grandfather, the prophet Zechariah. Hezekiah probably brought all of the scriptures into comparison to the current events of the evil that was right before him (the fall of Israel, King Ahaz) and had learned and come to the conclusion of the results of a Godly reign vs. an ungodly reign.
There was probably no comparison to the Godly example of his mother.
While King, Hezekiah also brought himself under the influence of another great Biblical prophet, Isaiah, who could have been a cousin and father-in-law, and therefore probably had influence in Hezekiah’s life since a young age.
With influences of both good and bad so close to him, we see someone who had a better grip of what it meant to be a Godly and ungodly king, and the personal and political consequences that would result from both lifestyles.