Twenty and five years old was he - This statement, combined with that of 2 Kings 16:2, would make it necessary that his father Ahaz should have married at the age of 10, and have had a child born to him when he was 11 years of age. This is not impossible; but its improbability is so great, that most commentators suggest a corruption in some of the numbers.
The Zachariah here mentioned was perhaps one of the “faithful witnesses” of Isaiah Isaiah 8:2.