Paul is addressing fact in this scripture verse that observing a specific day for a biblical holiday, like Easter or Christmas, is not the most important thing to consider when viewing a special day through the holy lens of God.
The Bible does not clearly identify the exact date of the resurrection of Jesus Christ. Nor do we celebrate it today on the precise date it occurred. The Jewish day began at sunset and our modern day begins at sunrise. The accounting of days was calculated differently and now is based on movement of the moon. All these things work together to confuse mankind, rather than moving him to bring honor and glory to God by directing his focus to the glorious supernatural event of the resurrection of His Only Son.
According to the details inspired and recorded in the Bible, Jesus’ death and resurrection occurred at the time of the Jewish Passover, which was celebrated on the first full moon following the vernal equinox. This calculation soon led Christians to celebrate the Resurrection on different dates each year as the celebration was determined according to a specific date, rather than astrological events. Sometimes the vernal equinox, or rotation of the moon is in conjunction with the time of the Jewish Passover celebration, but sometimes it is not.
The cycles of the moon and the calculation of the months of year got out of synch at some point in history, maybe because of leap years, and dates began to vary from one another. This confusion was related to having more than one calendar implemented over the years by various nations. The Gregorian (solar calculations) and the Julian calendar both calculate days of the year but in a different manner and can be days apart in the appointing of a particular holiday. Today, the use the Gregorian calendar has been adopted, almost exclusively worldwide in appointing a day for celebrating Easter.
Digging in the Bible for actual date of Jesus Christ’s actual death on the cross and His Subsequent Resurrection unto new life one will find that these days are not able to be specifically “nailed” down, kind of like attempting to nail jello to the wall! The best detail, or the most biblically accurate date that can be said, is that Jesus Christ was crucified around the Passover (the 15th of the Jewish month of Nisan), and that this event occurred sometime during Pilate’s rule which was recorded in the time of AD 26-36.
The date of Jesus’ resurrection and the date that we celebrate Easter have two specific connections: Jesus was resurrected on a Sunday, and Passover is always celebrated in the spring. The Bible definitely says Jesus Christ arose from His grave the third day, early on the first day of the week (Mark 16:1-2, Luke 23:56; 24:1,22 and John 20:1-10). The Bible also states Jesus Christ was removed from the cross soon after His physical death because the Sabbath was rapidly approaching along with a high holy day known as the feast of Unleavened Bread falling on the night after the Passover celebration.
Typically, Easter falls on a Sunday, somewhere between March 22 and April 25 each year. It cannot be emphatically stated that we celebrate the resurrection of Jesus Christ today on the actual day this great spiritual event took place in ancient times. Potentially, knowing the actual day would cause man to worship the day, rather than placing faith and hope in the supernatural power of God whose unlimited power ushered in new spiritual life as His Only Son Jesus Christ was resurrected from the grave and defeated the sting of death.
Paul is inspired of God to record in the book of Romans that mankind can celebrate Jesus Christ’s resurrection (along with His birth at Christmas time) on the day appointed on the calendar, regardless of when the actual day occurred in ancient history. It is far more important to observe a meaningful and worshipful celebration aimed at bringing honor and glory to God serving no need or biblical purpose getting caught up in endless arguments about Easter falling a specific day and in a specific timeframe.
It is of great importance that the quickened alive man gives proper credence to an eternally focused Easter celebration celebrating the supernatural power of God over the sting of death. An event that is holy and proper in God’s estimation. An Easter celebration should rest solidly on biblical truth found in God’s Word rather than following after the god of this world and depending on upon traditions of man; including having a family gathering, giving chocolate Easter bunnies in baskets and hunting colorful Easter eggs.