Only God can discern the hearts of men. And here is what He saw in Hezekiah, king of Judah:
He trusted in the LORD God of Israel, so that after him was none like him among all the kings of Judah, nor who were before him. For he held fast to the LORD; he did not depart from following Him, but kept His commandments – 2 Kings 18:5-6.
That is a great relationship model for us today. Hezekiah "held fast," which means in Hebrew to cling, follow closely or pursue hard. How many professing Christians do we see today pursuing the Savior with tenacity? Hezekiah also "kept" God's commandments, which doesn't mean he simply reserved a Torah scroll for the royal library. Hezekiah had the Torah written on His heart, not just parchment. The Hebrew word for "kept" means to hedge about, guard, look narrowly.
In other words, the king took his relationship with YHVH seriously. Obeying God's word wasn't an obligation, but a privilege. And how does God respond to Hezekiah's loyalty? Verse 7 says "the LORD was with him; he prospered wherever he went." The Hebrew rendering for "prospered" denotes understanding and wisdom, not material wealth. LORD, create in us a heart like Hezekiah's, devoted to You and Your kingdom. May we pursue hard after You.