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.

Why must justifying faith lay hold upon both the death and the resurrection of Christ?
What change is thus brought about?
What was the special message for Noah's day?
What restriction did God make respecting marriages in Israel?
How does he emphasize the reliability of prophecy?
According to the New Testament, what day immediately precedes the first day of the week?
How is this great and dreadful day described in this same prophecy?

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