Zechariah 13:8-9 New Revised Standard Version (NRSV)
8 In the whole land, says the Lord,
two-thirds shall be cut off and perish,
and one-third shall be left alive.
9 And I will put this third into the fire,
refine them as one refines silver,
and test them as gold is tested.
They will call on my name,
and I will answer them.
I will say, “They are my people”;
and they will say, “The Lord is our God.”