King Uzziah became king at 16. He was helped by many to become strong & successful. He was given great knowledge to secure & establish the kingdom. He loved the Lord & was very faithful. His intelligence got the best of him & pride sat in. It was the stumbling block that blinded his judgement. “Moreover, Uzziah prepared for all the army shields, spears, helmets, body armor, bows and sling stones. In Jerusalem he made engines of war invented by skillful men to be on the towers and on the corners for the purpose of shooting arrows and great stones. Hence his fame spread afar, for he was marvelously helped until he was strong. But when he became strong, his heart was so proud that he acted corruptly, and he was unfaithful to the LORD his God, for he entered the temple of the LORD to burn incense on the altar of incense. Then Azariah the priest entered after him and with him eighty priests of the LORD, valiant men. They opposed Uzziah the king and said to him, "It is not for you, Uzziah, to burn incense to the LORD, but for the priests, the sons of Aaron who are consecrated to burn incense. Get out of the sanctuary, for you have been unfaithful and will have no honor from the LORD God." But Uzziah, with a censer in his hand for burning incense, was enraged; and while he was enraged with the priests, the leprosy broke out on his forehead before the priests in the house of the LORD, beside the altar of incense. Azariah the chief priest and all the priests looked at him, and behold, he was leprous on his forehead; and they hurried him out of there, and he himself also hastened to get out because the LORD had smitten him.”
2 Chronicles 26:14-20 NASB
Many times pride will cause us to rationalize what the Lord has done in our life. It will cause us to doubt and be ashamed to give God the rightful credit or not be satisfied with our current relationship or place of service (our assignment). It's the hardest fault to detect because it begins without notice & is not one of the "big ones." Prayer reveals these when we honestly ask the Lord. He has won the victory over pride & every other act we can commit.