Hezekiah received a sign from the Lord. This sign reminds us of another sign that the prophet had offered to Ahaz (Isaiah 7:11).
Ahaz and Hezekiah stand at the two ends of a long story in Judah’s history. Ahaz represents the ungodly king. Hezekiah represents the godly king.
Ahaz brought disaster on his people through his choices. Hezekiah, in contrast, brought deliverance to his people. However, Isaiah 39 shows that even Hezekiah’s story includes warning and future trouble.