2 Chronicles 36:11

Zedekiah was twenty and one years old when he began to reign; and he reigned eleven years in Jerusalem:

2 Kings 24:18-20

Zedekiah was twenty and one years old when he began to reign; and he reigned eleven years in Jerusalem: and his mother's name was Hamutal the daughter of Jeremiah of Libnah.

Jeremiah 27:1

In the beginning of the reign of Jehoiakim the son of Josiah, king of Judah, came this word unto Jeremiah from Jehovah, saying,

Jeremiah 28:1

And it came to pass the same year, in the beginning of the reign of Zedekiah king of Judah, in the fourth year, in the fifth month, that Hananiah the son of Azzur, the prophet, who was of Gibeon, spake unto me in the house of Jehovah, in the presence of the priests and of all the people, saying,

Jeremiah 52:1-3

Zedekiah was one and twenty years old when he began to reign; and he reigned eleven years in Jerusalem: and his mother's name was Hamutal the daughter of Jeremiah of Libnah.

Treasury of Scripture Knowledge

Summary

Zedekiah was one and twenty years old when he began to reign, and reigned eleven years in Jerusalem.

One and twenty

Bible References

One and twenty

2 Kings 24:18
Zedekiah was twenty and one years old when he began to reign; and he reigned eleven years in Jerusalem: and his mother's name was Hamutal the daughter of Jeremiah of Libnah.
Jeremiah 52:1
Zedekiah was one and twenty years old when he began to reign; and he reigned eleven years in Jerusalem: and his mother's name was Hamutal the daughter of Jeremiah of Libnah.

American Standard Version Public Domain