- Constantine  does not alter traditional politics, which tolerates the worship of Jews and grants privileges to their priests. However, towards the end of his reign, he was concerned to protect Jewish converts to Christianity from the reprisals of their former fellow Jews and forbade Jews to circumcise their Christian slaves.
- One  of the first measures of Constantine after his victory over Maxence aims at the repression of proselytism. It is not yet, strictly speaking, a substantial change in the traditional (Jewish) status, since propagandist activity had never been explicitly recognized as a right of the Jews; she was tolerated, not allowed. But it is clear that this formal measure responds to religious and not political motives. It tends to suppress dangerous competition for the Church. The context of the ban is significant. It constitutes, in fact, the second part of a law whose first object is to protect against the abuse and the reprisals of their former co-religionists the Jews, come to Christ. Freedom of propaganda for Christianity, official protection for converted Jews, and for Judaism absolute prohibition to spread: already theoretical equality tends to give way to a flagrant inequality of fact.
(extract of the psalm 64 associated to this generation, verses 1 to 7 )
- For the conductor, a song of David.
- Hear, O God, my voice in my prayer; from fear of the enemy You shall guard my life.
- David expresses his fears for the new Christian empire that is born.
- You shall hide me from the counsel of evildoers, from the gathering of workers of iniquity,
- Who whetted their tongue like the sword; who aimed a bitter word like their arrow,
- To shoot at the innocent in secret places; they shoot at him suddenly and do not fear.
- Until now Christianity was a dissident religion often opposed by previous Roman emperors. The anti-Jewish attacks were then reduced to theological battles. Now that Christianity has passed from the « good side of the scepter » permanently, its attacks give rise to political attacks putting the Jewish community in real danger.
- They strengthen the evil word for themselves; they tell to hide snares. They say, « Who will see us? »
- They seek pretexts; they have completed a diligent search, hidden within man and in the depths of the heart.
- Sure of their power, it is without fear that he thinks he can attack the seemingly helpless Jews for the rest of the night. We have enough perspective today to measure the results of this slowly elaborated plan of Jewish marginalization.
- The adherence  to Constantine’s Christianity, which would become, eighteen years later, the undisputed ruler of the empire, was to have a decisive influence on the culture and character, political and religious, of Palestine. The local rabbis, whose real reactions to this great transformation did not reach us, found some consolation in this change, and the form of their expectations of imminent salvation adapted to the new circumstances. The support of an official figure as important as Constantine foreshadowed the Christianization of the entire empire. In their hearts, this was the historical and theological dilemma that the rabbis faced: when Rome converted from paganism to Christianity, should they view the Christian empire as a new entity or simply as a mutation of the old system? If the last hypothesis were right, faithful to their own affirmation of redemption would come when « the empire will fall (it) into heresy » (Mishnah Sotah 9,15), salvation was near. As a result, a contemporary sage reformulated this point in the eschatological schema of the « End of Days »: Rabbi Isaac says: « Until all the empire is converted to heresy » (Talmud of Babylon, Sanhedrin, 97a ). By this textual correction, not only was the estimated date of the End of Days set back, but paradoxically the Jews allied themselves with the Christians to hasten the transformation, certainly for contrary reasons.
(extract of the psalm 64 associated to this generation, verses 8 to 11 )
- And God cast them down; their wounds were [like] a sudden arrow.
- That which they hoped would make him stumble, their tongue brought upon them; all who see them will shake their heads.
- Then all men feared, and they declared the work of God and understood His deed.
- The righteous will rejoice with God and take shelter in Him, and all upright of heart will boast.
 Pierre Maraval: « The Christianity of Constantine to the Arab conquest » / Chapter: « The religious policy of Constantine to Heraclius and barbarian kings ». (French: « Le Christianisme de Constantin à la conquête arabe »/Chapitre : « La politique religieuse de Constantin à Héraclius et des rois barbares » (p11) ).
 Marcel Simon: « Verus Israel » / Chapter: « Rome, Judaism and Christianity ». (French: « Verus Israël »/Chapitre : « Rome, Judaïsme et Christianisme » (p156/157) ).
 David Biale: « The cultures of the Jews »/ Chapter: « Confrontation with a Christian empire: Jewish culture in the Byzantine world » (by Oded Irshaï). (French: « Les cultures des Juifs »/Chapitre : « Confrontation avec un empire chrétien : La culture juive dans le monde byzantin » (par Oded Irshaï)/(p194 – version originale :184/185) ).