I would like to talk about Christianity 
It's currently the worlds largest religion, with over 2.4 billion people.  Just about 33% of the world.
Yes, the person from this are more religious and Trustful person 
Given that they make up 33% of the population, it translates to about 158 countries.
Christian beliefs are based on the teaching of Jesus
Indeed they are.  They believe he is the Son of God and the savior of humanity.  
Christians believe in justification by faith
Right!  For Christians, justification is God's act of removing the guilt and penalty of a sin and also making the sinner righteous.
Christians believe that there is a life after earthly death
That was an oddly quick response!  But yes, they do.  Christianity grew out of Judaism and began around the 1st century.