We could all hope for a military leader as strong as Uzziah. But he made the mistake of thinking he earned his greatness, when it was just borrowed from God.

  And Uzziah prepared for all the army shields, spears, helmets, coats of mail, bows, and stones for slinging. In Jerusalem he made machines, invented by skillful men, to be on the towers and the corners, to shoot arrows and great stones. 

And his fame spread far, for he was marvelously helped, till he was strong. But when he was strong, he grew proud, to his destruction. For he was unfaithful to the Lord his God and entered the temple of the Lord to burn incense on the altar of incense.

2 Chronicles 26:14-16 ESV