John Ritenbaugh insists that the vital key in establishing Bible doctrine is to allow the Bible to define its own terms and establish its own evidence rather than turning to secular historians or Protestant, Catholic and Jewish theologians. Using subtle diversion and subterfuge, some proponents of the fifteenth Passover, like desperate criminal lawyers, muddle up otherwise clear, day and night issues by surreptitiously inserting modern English language usage, which begins the day at midnight. Honest biblical investigation leads to the conclusion that two separate occurrences are memorialized in Exodus 12:12-17 — Passover and Unleavened Bread.
John Ritenbaugh suggests that the proponents of late Passover (15th) have to make wild speculations about a mass meeting in Rameses, have to discount a series of scriptural details (such as purifying houses and keeping the Passover within the house until the next day). One cannot build doctrines on implication, distortion, and biased traditions. It is safer to let God's Word interpret itself.
John Ritenbaugh insists that nine steps had to be included with the Passover process, including the eating of the lamb, all within the house until the morning. The time frame designated for Passover was ben ha arbayim—a period of time between the going down of the sun and complete darkness (dusk), totally within the confines of the designated day, in this case the fourteenth, as God had commanded. To use scholarship that contradicts the Bible—relying upon tradition rather than God's Word—is not unlike carrying the Ark of the Covenant in the oxcart.
Herbert Armstrong presents seven arguments proving that the week has not been altered over the centuries, and thus, we keep the same seventh-day Sabbath as God created in Genesis 2.