Do you know everything of the epoch in which the ancient Greeks and Romans lived? This time is called antiquity. It lasted from 3000 BC to 500 ad.
Christianity is a religion based on the Gospel and life of Jesus as described in the New Testament, the second part of the Holy Book of Christians, the Bible.
Nowadays almost every village has a church. Can you imagine that the Church was once banned? In the epoch of the Romans if you are not a Christian.
Do you know what a missionary? These people are trying to repent. In the epoch of the middle ages there were a lot of missionaries in Netherlands.