Also he built towers in the desert, and digged many wells: for he had much cattle, both in the low country, and in the plains: husbandmen also, and vine dressers in the mountains, and in Carmel: for he loved husbandry.
Towers — To guard his cattle from the inroads which the Arabians were accustomed to make: and to give notice of the approach of any enemy.
 But when he was strong, his heart was lifted up to his destruction: for he transgressed against the LORD his God, and went into the temple of the LORD to burn incense upon the altar of incense.
Into Jerusalem — Into the holy place, where the altar of incense stood, and into which none but the priests might enter, much less offer incense.
 And they withstood Uzziah the king, and said unto him, It appertaineth not unto thee, Uzziah, to burn incense unto the LORD, but to the priests the sons of Aaron, that are consecrated to burn incense: go out of the sanctuary; for thou hast trespassed; neither shall it be for thine honour from the LORD God.
Withstood — Heb. stood up against Uzziah, not by force, or laying hands upon him to restrain him, for in the next verse you still find the censer in his hand; but only by admonition and reproof, which follows.
Neither, … — Expect that God will punish thee, or put some brand of infamy upon thee for this presumption. But this they express modestly, because they considered that he to whom they spake, though an offender, was their sovereign.
 Then Uzziah was wroth, and had a censer in his hand to burn incense: and while he was wroth with the priests, the leprosy even rose up in his forehead before the priests in the house of the LORD, from beside the incense altar.
His forehead — So that he could not hide his shame: though it is probable it was also in the rest of his body.
From beside — By a stroke from an invisible hand coming from the altar; that he might be assured this was the effect of God's displeasure.
 And Azariah the chief priest, and all the priests, looked upon him, and, behold, he was leprous in his forehead, and they thrust him out from thence; yea, himself hasted also to go out, because the LORD had smitten him.
Thrust — Not by force, which needed not, for he voluntarily hasted away, as it follows; but by vehement persuasions and denunciations of God's farther judgments upon him, if he did not depart.
 And Uzziah the king was a leper unto the day of his death, and dwelt in a several house, being a leper; for he was cut off from the house of the LORD: and Jotham his son was over the king's house, judging the people of the land.
His death — God would have this leprosy to be incurable, as a lasting monument of his anger against such presumptuous invaders of the priest's office.
Dwelt, … — As he was obliged to do by law, which he durst not now resist, being under the hand of God, and under the fear of worse plagues, if he did not so.
For — He dwelt in a several house, because he might not come into the temple or courts, nor consequently into any publick assembly. So the punishment answered the sin, as face does to face in a glass. He thrust himself into the temple of God, whether the priests only had admission: and for that was thrust out of the very courts of the temple, into which the meanest of, his subjects might enter. He invaded the dignity of the priesthood, to which he had no right, and is for that deprived of the royal dignity, to which he had an undoubted right.