What is a real Christian? Is it someone who professes The Messiah
as Savior? Or someone who obeys and puts His teachings into
daily practice?

For example, during plague times in the Roman Empire while many
people were trying to flee for safety it was the Christians
who were staying and nursing the sick, at great risk of their
own lives. Those who watched and those who survived, were
often attracted to trust the Messiah

Along the same lines -- the Romans accepted infanticide
[think of it as 'very late abortion' by abandoning unwanted
children, while Christians forbade it, and were willing to
take in the unwanted. This added to their numbers both by
example, and of course by the raising and teaching these
children their own faith.

At the same time, Christians accepted people of various social
classes as equals... an attraction to the many slaves of the
Roman Empire.

Try this on today, what if every Christian family went to
an orphanage and Adopted just one child, do you think the
world would notice?

What if we took care of those with Aids,..... "the Christians
will handle all the Aids cases"..... do you think the world
would notice??