Possible Years for the Crucifixion
Based on astronomical calculations taking into account all factors determining the visibility of a new moon in Jerusalem, two British physicists, Colin J. Humphreys and W. G. Waddington, have shown that in only two of the years framed by AD 26 and AD 36 (the years spanning all Passovers when Pilate was governor of Judea) could the fourteenth of Nisan have fallen on a Friday: in AD 30 and 33.1 We can therefore find the correct year of the Crucifixion by a process of elimination. The year 30 is impossible for two reasons.
Reasons AD 30 Cannot Be the Year of the Crucifixion
First reason
Luke says that John the Baptist began to preach in Tiberius’s fifteenth year (Luke 3:1–3). By official Roman reckoning— as exhibited, for example, in the histories of Tacitus, Suetonius, and Dio Cassius—Tiberius’s fifteenth year ran from January 1, AD 29, to January 1, AD 30.2 It is remotely possible that Luke is using a form of Jewish reckoning. But even if he is, he is placing the beginning of John’s ministry no earlier than Nisan of 28.3 Yet Luke’s Gospel is addressed to the "most excellent Theophilus," doubtless a Roman official. It is probable for this and other reasons that the writer uses ordinary Roman reckoning in his dating of events.4 Thus, John’s prophetic voice was first heard in 29. To suppose that Jesus began His ministry later in the same year and completed it before Passover of 30 cannot be reconciled with Gospel accounts, which testify that He was active as a teacher and healer for more than three years. It follows that AD 30 cannot be the year of the Crucifixion.
Nevertheless, many scholars and Bible teachers a century ago assigned the Crucifixion to AD 30. They supposed that when Luke figured the regnal years of Tiberius, he included the term when he held high authority under Augustus before the emperor’s death in AD 14. But a century of new discoveries has discredited this view. No trace of reckoning from an earlier starting point appears in any of the papyri, coins, and inscriptions that have come to light.5 The same enumeration of the emperor’s years was used throughout the empire, and by that enumeration, the fifteenth year of Tiberius was AD 29. Since Luke obviously expected his date to be understood by readers everywhere, it is inconceivable that he used some obscure method of reckoning.
Second reason
In 26, when Pilate was given his post in Judaea,6 the emperor Tiberius relied heavily upon a certain Sejanus to manage the everyday affairs of government.7 It is therefore likely that Pilate was the choice of Sejanus. According to the Jewish writer Philo, this Sejanus was strongly anti-Jewish,8 so it is not surprising that his appointee Pilate was, during his earlier years in office, severely repressive of the Jews. On several occasions, Pilate deliberately offended Jewish religious scruples, and at least once he then severely punished those who protested.9
But in the Gospels we see a different Pilate. Instead of standing firm in his desire to release Jesus, he meekly bows to pressure from the Jewish leaders to crucify Him. What accounts for his inconsistent behavior? The best explanation notices the political climate in Rome. In late 31, Sejanus was put to death after he was discovered plotting against the emperor.10 As a result, any official associated with Sejanus must have found himself under suspicion and in danger of dismissal or even worse forms of censure. Pilate was in particular danger because he had so frequently stirred up unrest among the people under his authority, and because, after Sejanus’s death, the emperor adopted a new policy toward the Jews, a policy of conciliation rather than repression.11 In fact, Pilate survived in office only until 36.12 If the Crucifixion fell in 30, Pilate’s behavior at the trial of Jesus is out of character. If it fell in 33, his behavior was a symptom of his precarious situation.
Evidence external to Scripture
Humphreys and Waddington have demonstrated that on April 3, AD 33, a lunar eclipse was visible in Jerusalem. As the moon rose over the Mount of Olives at about 6:20 P.M., the shaded portion was near the top, and overall the moon was distinctly red in color, as if it were smeared with blood.13 No other lunar eclipse was visible from Jerusalem at Passover time during the whole span of possible years for the Crucifixion, from AD 26 to 36.
For two reasons, this discovery lends strong support to placing the Crucifixion on the same date.
- Either a bloody moon rose on the scene where Jesus had just shed His blood for the sins of mankind, or it rose by chance on the date that, based on other evidence, scholars have mistakenly assigned to the Crucifixion. The former seems far more likely.
- On the day of Pentecost, a few days after the Crucifixion, Peter quoted the following words of Joel, the Old Testament prophet (Acts 2:17–21).
28 And it shall come to pass afterward, that I will pour out my spirit upon all flesh; and your sons and your daughters shall prophesy, your old men shall dream dreams, your young men shall see visions:
29 And also upon the servants and upon the handmaids in those days will I pour out my spirit.
30 And I will shew wonders in the heavens and in the earth, blood, and fire, and pillars of smoke.
31 The sun shall be turned into darkness, and the moon into blood, before the great and the terrible day of the LORD come.
32 And it shall come to pass, that whosoever shall call on the name of the LORD shall be delivered: . . . .
Joel 2:28–32
The Synoptic Gospels inform us that while Jesus hung on the cross, darkness descended upon the land from about noon until about 3 P.M. (Matt. 27:45; Mark 15:33; Luke 23:44). They do not speak of the moon turning to blood, but Peter’s quotation of Joel leaves little doubt that this somber image in the evening sky had also been generally observed on the day of Jesus’ death. Use of Joel’s vision to prove that the disciples were now Spirit-filled was very effective because everyone in the audience was still awestruck after seeing both of these celestial signs just a few days earlier.
Julian Date of the Crucifixion
At last we are ready for a conclusion of prime importance. The only year we can reasonably assign to the Crucifixion is AD 33. A consensus that this was the actual year continues to build among New Testament scholars.14 Those who have endorsed it now include Jack Finegan, widely regarded as the doyen of Biblical chronology.15
Many scholars in the past shied away from this date, doubting that Christianity could become a worldwide movement already by the early 50s if the church in Jerusalem originated as recently as 33. Pushing the date back to 30 made the wildfire expansion of Christianity less miraculous. So, in recognizing that 33 was the true starting date, we learn how miraculous this expansion was, and we can respond by giving full credit to the power of God.
In previous lessons we have established beyond reasonable doubt that Jesus died on Friday, the fourteenth of the Jewish month Nisan. Humphreys and Waddington have shown that in AD 33, the Julian date of Nisan 14 was April 3.16 We conclude that the correct date for the Crucifixion was April 3, AD 33.