Constantine promulgates laws in 326 against the prostitution of maidservants, and for the humanization of prisons.

Constantine, for reasons that remain obscure, has his son Crispus, who had accompanied him to Rome, slain at Pola, in Venetia, and shortly afterward executes his own wife Fausta, Crispus' stepmother.

The rebellion of Jin Dynasty general Su Jun against Emperor Cheng's regent Yu Liang is initially successful, allowing him to take over the imperial government.

In order to resolve the shortage of labor in the provinces, Constantine decrees in 327 that rural slaves can only be sold in the province where they reside.

Both the cult of Mithras and Zoroastrianism have been commonly practiced in Iberia from the first centuries CE.

The cult of Mithras, distinguished by its syncretic character and thus complementary to local cults, especially the cult of the Sun, had gradually come to merge with ancient Georgian beliefs.

The western Georgian Kingdom of Iberia (Kartli) becomes one of the first states in the world to convert to Christianity in 327, when the King Mirian II establishes it as the official state religion, outlawing the pagan gods.

He founds the church in Mtskheta on the site of which the cathedral of Svetitskhoveli will eventually be erected. (The date of conversion varies based on numerous accounts and historical documents, which indicate Iberia adopting Christianity as a state religion in CE 317, 324, etc. According to Georgian chronicles, St. Nino of Cappadocia converted Georgia to Christianity in 330 during the time of Constantine ‘the Great’.)

Pachomius had set out to lead the life of a hermit near Anthony of Egypt, whose practices he imitated.

An earlier ascetic named Macarius had earlier created a number of proto-monasteries called larves, or cells, where holy men would live in a community setting who were physically or mentally unable to achieve the rigors of Anthony's solitary life.

Pachomius sets about organizing these cells into a formal organization.

Christian asceticism up to this point had been solitary or eremitic.

Male or female monastics, living in individual huts or caves, meet only for occasional worship services.

Pachomius seems to have created the community or cenobitic organization, in which male or female monastics live together and have their possessions in common under the leadership of an abbot or abbess.

Pachomius himself was hailed as "Abba" (father) whence the word abbot derives.

This first cenobitic monastery, established between 318 and 323 by Pachomius, is in Tabennisi, an island of the Nile in Upper Egypt.

His elder brother John had been the first to join him, and soon more than one hundred monks are living at his monastery.

On becoming emperor at York in 306, Constantine had made his mother, Helena, empress dowager; under his influence, she had later become a Christian.

She was devoted to her eldest grandson, Crispus.

Following the double tragedy of Constanine's execution of his son and wife, the story becomes current that Fausta had accused Crispus of attempting to seduce her—hence Crispus' execution.

Fausta, in turn, had been denounced by the grief-stricken Helena and was executed shortly afterward.

It is perhaps in some sense to atone for the family catastrophe that Constantine's mother, Helena, embarks on a pilgrimage to the Holy Land.

Directed by her son to build churches upon sites which commemorated the life of Jesus Christ, her journey is attended by almsgiving and pious works and is distinguished by her church foundations at Jerusalem and at Bethlehem, where she has the Church of the Nativity built over the cave venerated by Christians as the birthplace of Jesus.

A church is also built in the initiative of Eutropia, Constantine's mother-in-law, at Mamre (near Hebron), where, according to an interpretation of Genesis shared by Constantine and Eusebius, Christ had first shown himself to men in God's appearance to Abraham; but …

…the most famous of these foundations follows the sensational discovery of what is purportedly the Holy Sepulcher at Jerusalem.

The site, originally one of veneration for the Christian community in Jerusalem, had been covered with earth and a temple of Venus had been built on top.

Although Eusebius does not say as much in his Life of Constantine, this would probably have been done as part of Hadrian's reconstruction of Jerusalem as Aelia Capitolina in 135, following the destruction of the Jewish Revolt of 70 and Bar Kokhba's revolt of 132–135.

Constantine takes up the discovery with enthusiasm, instructing Macarius, Bishop of Jerusalem, to build a great new basilica at the spot, offering unlimited help with labor and materials and suggestions as to design and decoration.

The people of the Malay Peninsula in the early centuries of the first millennium adopt the Indian religions of Hinduism and Buddhism, religions which are to have a major effect on the language and culture of those living in Malaysia.

The Sanskrit writing system is used as early as the fourth century.