'Years' in the Bible

From the thirteenth year of Josiah the son of Amon, king of Judah, even to this day, these twenty-three years, the word of Yahweh has come to me, and I have spoken to you, rising up early and speaking; but you have not listened.

This whole land shall be a desolation, and an astonishment; and these nations shall serve the king of Babylon seventy years.

It shall happen, when seventy years are accomplished, that I will punish the king of Babylon, and that nation, says Yahweh, for their iniquity, and the land of the Chaldeans; and I will make it desolate forever.

Within two full years will I bring again into this place all the vessels of Yahweh's house, that Nebuchadnezzar king of Babylon took away from this place, and carried to Babylon:

Hananiah spoke in the presence of all the people, saying, Thus says Yahweh: Even so will I break the yoke of Nebuchadnezzar king of Babylon within two full years from off the neck of all the nations. The prophet Jeremiah went his way.

For thus says Yahweh, After seventy years are accomplished for Babylon, I will visit you, and perform my good word toward you, in causing you to return to this place.

At the end of seven years you shall let go every man his brother who is a Hebrew, who has been sold to you, and has served you six years, you shall let him go free from you: but your fathers didn't listen to me, neither inclined their ear.

Zedekiah was twenty-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.