According to Wiki the US has the third highest number of Zoroastrians, behind India and Iran.
n=15,000
This may be permitted by the Lord at this time as a reminder of what Christians need to be better than by His power. Zoroastrianism is a “keep it up, it’s ok” religion. Christianity is truly progressive, hastening to add that the goals to which it progresses are by the choice of God, not of man.