According to the New Testament Ozias was the son of Joram; according to the Old Testament he was the great great-grandson of Joram.
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Who was Josiah’s successor?
Matthew: Jechonias ([i, 11]).
“Then the people of the land took Jehoahaz, the son of Josiah, and made him king in his father’s stead” ([2 Chronicles xxxvi, 1]).
“For thus saith the Lord touching Shallum, the son of Josiah, king of Judah, which reigned instead of Josiah, his father” ([Jeremiah xxii, 11]).
“And Pharaoh-nechoh made Eliakim the son of Josiah king in the room of Josiah, his father, and turned his name to Jehoiakim” ([2 Kings xxiii, 34]).
According to Matthew, Josiah’s successor was Jechonias; according to Chronicles, Jehoahaz; according to Jeremiah, Shallum; according to Kings, Jehoiakim.