Zechariah 13:8-9

The LORD says, “Two-thirds of the people through all the land will die. They will be gone, and one-third will be left. The third that is left I will test with fire, purifying them like silver, testing them like gold. Then they will call on me, and I will answer them. I will say, ‘You are my people,’ and they will say, ‘The LORD is our God.’ ”