Nicene and Post-Nicene Fathers, Ser. II, Vol I:
The Life of Constantine with Orations of Constantine and Eusebius.: Chapter XX

Chapter XX.—Flight of Constantine to his Father because of the Plots of Diocletian. 3093

The emperors then in power, observing his manly and vigorous figure and superior mind, were moved with feelings of jealousy and fear, and thenceforward carefully watched for an opportunity of inflicting some brand of disgrace on his character. But the young man, being aware of their designs, the details of which, through the providence of God, more than once came to him, sought safety in flight; 3094 in this respect again keeping up his resemblance to the great prophet Moses. Indeed, in every sense God was his helper; and he had before ordained that he should be present in readiness to succeed his father.

Footnotes

Eusebius himself speaks in the plural, and other writers speak of plots by both Diocletian and Galerius. Compare Prolegomena.

Compare detailed account in Lactantius, De M. P. c. 24.