'Happened' in the Bible

The seventh angel threw the contents of his bowl across the sky. A loud voice came from the throne in the Temple and said, "It has happened!"

And there were lightnings and sounds and thunders, and there was a great earthquake, as has not happened from the [time] humanity has been on the earth--so great in this way [was] the earthquake.

Then he told me, "It has happened! I am the Alpha and the Omega, the beginning and the end. I will freely give a drink from the spring of the water of life to the one who is thirsty.