'End of the Age' in the Bible

and the enemy sowing them is the devil: and the harvest is the end of the age; and the reapers are the angels.

Then as the tares are gathered and burnt up with fire; so it will be in the end of the age.

So it will be in the end of the age: the angels will go forth, and will separate the wicked from the midst of the righteous,

And He sitting upon the Mount of Olives; the disciples came to Him privately, saying, Tell us, when these things shall be? and what shall be the sign of thy coming and the end of the age?

teaching them to observe all things which I commanded you. And lo, I am with you all the days, unto the end of the age.