In Acts 20:6 we read: "We sailed from Philippi after the days of Unleavened Bread . . . ." The days of Unleavened Bread refers to the week after the Passover, so why are Paul and Luke still celebrating the Passover, especially in this totally gentile city? Didn't the sacrifice of Jesus Christ replace the Passover forever? Or should we read this simply to mean it was a date of reference on the calendar which they didn't actually celebrate?