QUESTION: What is the meaning of 606AD and 33AD?

ANSWER: AD comes from the first letters of the two Latin words anno domini. These words mean “in the year of our Lord.” 606AD means 606 years after the year in which our Lord was born! This is the year during which the Catholic Church, as we know it today, came into existence. 33AD, likewise, means 33 years after the year in which our Lord was born! This is the year during which many believe the church of Christ was established on the day of Pentecost.

If the letters BC were to appear after 606 or 33 (606BC; 33BC), it would mean 606 years or 33 years “before Christ” was born.