Why does believing in Jesus Christ need courage?

Answer 1

Believing in Jesus Christ has required courage at different times and places in history, just as not believing has also required courage.

Publicly worshipping Jesus in much of the eastern Roman Empire would have required courage during the Great Persecution of 303-311. Publicly worshipping the pagan gods in much of the Roman Empire during the reign of Emperor Theodosius, less than a hundred years later, would have required extraordinary courage.

Worshipping Jesus requires courage in North Korea, even today. But in some Western countries for much of the twentieth century publicly describing oneself as an atheist also took courage. What requires courage is holding different beliefs to the majority.