if we look at Luke 11:50-51 we see prophets shed their blood "from the foundation of the world." Specially the time from Abel to Zacharias. So a better translation of the phrase would be "since the foundation of the world."
But we should not stop our study there. Just when was "the foundation of the world?" Most, taking the traditional translation as valid, would say somewhere during the creation week described in Genesis 1.
If we consider translating the phrase as the downcasting of humanity, then it refers to since the Fall of Adam.
Last point, when does this time period end? At the end of the age, when Christ returns which means we are in the time period now and will be until end times.
But we should not stop our study there. Just when was "the foundation of the world?" Most, taking the traditional translation as valid, would say somewhere during the creation week described in Genesis 1.
If we consider translating the phrase as the downcasting of humanity, then it refers to since the Fall of Adam.
Last point, when does this time period end? At the end of the age, when Christ returns which means we are in the time period now and will be until end times.