Hezekiah did not respond appropriately to the kindness shown him and he became proud - 2 Chronicles 32:24-25
Bible calls Hezekiah a godly king - he didn't make good use of an amazing gift God had given him
He received 15 years additonal life - 2 Kings 20
Hezekiah forgot to be a good steward of what had given him and became proud by showing off his treasure of house and armory - 2 Kings 20:13
God warned him that the same Babylonian nation that send the treasure would destroy it - 2 KIngs 20:14