“¶ Iehoiachin was eighteene yeres old when he began to reigne, & he reigned in Ierusalem three moneths: & his mothers name was Nehushta the daughter of Elnathan, of Ierusalem.”
1611 King James Version (KJV)
24:8 To reign - In his eighth year he began to reign with his father, who made him king with him as divers other kings of Israel and Judah had done in times of trouble; and in his eighteenth year he reigned alone.