If you mean by 'first' the religion with the most believers, then, yes, Christianity is the largest religion in the world with between 2.1 and 2.8 billion members (depending upon the numbers in countries where Christians are persecuted and so there is a certain degree of secrecy about membership.) This represents over a third of the earth's population, and will rise to nearly a half of the world's population within 20 years if the numbers of Christians in China continue to grow at the same rate as today.
Catholic/Christian
Christian
Christianity
No but Christianity has the most people of its religion About 1/3 of the world is Christian
More or less all of them.
Her religion is christian!
Yes they do...Christian is a religion also known as Christianity. This is the belief in God, creator of the world.
There is an estimated 2.18 billion people who identify as part of the Christian population in the world. Christianity is a religion practiced in over 200 countries in the world.
According to census, about 33%
3
Without Him, there IS no Christian religion. Jesus IS the Christian religion.
Mostly Christian/Catholic, but Czechia has the largest atheist rate in the world. So I can answer that Czech religion is Atheism.