The Lord Jesus Christ of Nazareth is crucified in Roman occupied Judea. Three days later he resurrects from the dead and appears to his disciples over the span of 40 days. Afterwards and with his earthly ministry completed, he ascends into heaven until is second coming.
The Holy Spirit appears to the apostles of Jesus, giving them the ability to speak many languages. The apostles spread out across the known world to spread the Gospel. The Church is born.