'End of the Age' in the Bible

The enemy who sowed them is the devil. The harvest is the end of the age, and the reapers are angels.

As he sat on the Mount of Olives, the disciples came to him privately, saying, "Tell us, when will these things be? What is the sign of your coming, and of the end of the age?"

teaching them to observe all things that I commanded you. Behold, I am with you always, even to the end of the age." Amen.