'Years' in the Bible

Then the angel of Jehovah answered and said, O Jehovah of hosts, how long wilt thou not have mercy on Jerusalem and on the cities of Judah, against which thou hast had indignation these threescore and ten years?

and to speak unto the priests of the house of Jehovah of hosts, and to the prophets, saying, Should I weep in the fifth month, separating myself, as I have done these so many years?

Speak unto all the people of the land, and to the priests, saying, When ye fasted and mourned in the fifth and in the seventh month , even these seventy years, did ye at all fast unto me, even to me?