The priest. That is, the high priest. Jehoiada was the high priest, and Zechariah was his son. It is a testimony to the fidelity of Jehoiada that he had a son upon whom the Lord could bestow the high honor of the gift of prophecy.
Stood above the people. In order better to gain the attention of the people, Zechariah had taken a position above them. When Ezra read the law to the people he stood upon a platform of wood made for this purpose (Neh. 8:4).
Why transgress ye? The question was one of rebuke. Why transgress when transgression will bring ruin (see Eze. 18:31)?
He hath also forsaken. God does not force His presence and blessing upon anyone. When men refuse His guidance the Lord withdraws His Spirit from them, and then they are left to the mercies of the cruel master whom they have chosen.