Jesus ascends into heaven and leaves his disciples with the great commission: to go out everywhere and be his witnesses, into Jerusalem, throughout Judea, in Samaria, and unto the ends of the earth.
The Holy spirit comes down upon all the believers in the upper room. Tongues of fire appeared and settled on each of them and they were filled with the holy spirit and began speaking in tongues. All the Jews from different nations could understand them in their own languages. 3,000 people believed and were baptized and added to the church that day.
Peter and John get persecuted by the council for healing and preaching in the name of Jesus of Nazareth
Stephen was the first christian martyr. He addressed the council and accused them of murdering Jesus. In return they stoned him to death, but being full of the holy spirit saw the glory of God and even asked God to forgive them (Acts 7:51-59)
Saul was on his was to Damascus asking for the cooperation in arresting any followers of Jesus. On the road to Damascus he encountered Jesus who questioned him asking "Saul! Saul! Why are you persecuting me?" He was blinded after this encounter. He as told to go to the city and he would be told what to do. From there God spoke to a believer named Ananias and told him to find Saul and lay hands on him so he can see again. The scales fell from Saul's eyes and he got up and was baptized. Immediately after he began preaching the gospel.
Peter has a vision of the sky opening and a large sheet was let down by four corners. Inside the sheet were different animals. In the vision God tells Peter to get up and kill the animals. Peter tells him no and he doesn't eat anything impure or unclean. God says to Peter "Do not call something unclean if God has made it clean." The same vision was repeated three times. From this vision it was declared that Gentiles are no longer unclean. The barrier was removed between nations and they accepted gentile believers.
Herod Agrippa Anointed King of Judea
40 AD - 44 AD
"Herod Agrippa I, original name Marcus Julius Agrippa, (born c. 10 BCE—died 44 CE), king of Judaea (41–44 CE), a clever diplomat who through his friendship with the Roman imperial family obtained the kingdom of his grandfather, Herod I the Great. He displayed great acumen in conciliating the Romans and Jews."
Nero is known for his debauchery, political murders and for the persecution of Christians. It was during his rule that the burning down of a large portion of Rome took place. He blamed the fire on the Christians and had them persecuted and crucified for it and burned at the stake.