What imperial law was issued in AD. 386?

Answer

"By a law of the year 386, those older changes effected by Constantine were more rigorously enforced;
and, in general, civil transactions of every kind on Sunday were strictly forbidden. " - Neander's "Church
History,- Vol. II, page 300.

How do the children of God walk?
Upon what basis is justification granted?
What was the result of this strife?
What assurance has God given of the judgment?
Where is the law of God written under the new covenant?
What test case arose in the time of the apostles over this question?
What title was given to the fourth state of the church?

Questions & Answers are from the book Bible Readings for the Home Circle