2 Kings 24:8

Jehoiachin was eighteen years old when he became king, and he reigned in Jerusalem three months. His mother’s name was Nehushta daughter of Elnathan; she was from Jerusalem.
BSB · Berean Standard Bible
Jehoiachin was eighteen years old when he began to reign, and he reigned in Jerusalem three months. And his mother’s name was Nehushta, the daughter of Elnathan of Jerusalem.

Note Jehoiachin: also called Jeconiah and Coniah

KJV · King James Version
Jehoiachin was eighteen years old when he began to reign, and he reigned in Jerusalem three months. His mother’s name was Nehushta the daughter of Elnathan of Jerusalem.
WEB · World English Bible
Jehoiachin was eighteen years old when he began to reign; and he reigned in Jerusalem three months: and his mother’s name was Nehushta the daughter of Elnathan of Jerusalem.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

Jehoiachin
1 Chronicles 3:16; Jeremiah 24:1
Jeconiah
Jeremiah 22:24, 28; Jeremiah 37:1
Coniah
Matthew 1:11, 12
eighteen years
In the parallel place, he is said to be only eight years old; but this must be a mistake, for we find that having reigned only three months, he was carried captive to Babylon, and there had wives; and had he been of such a tender age, it could scarcely have been said that, as a king, "he did that which was evil in the sight of the Lord."
2 Chronicles 36:9