Although Theodosius made the church a state religion (A.D.380), Constantine’s
Christian era lacked a pious pursue of the Word of God. Instead, it was
more of a military cause, legal sponsorships and relics, which no doubt
could easily result in a state religion around 50-60 years later, when
defense of faith began to fall behind.
Nonetheless, this is not to discredit Constantine’s effort in his
Edict of Milan in 313. Which allowed many Christians to come out of hiding. A
Brave move by a Christian king.
It is good to support Christianity, but it is better to hear God’s word and do them.