This is another excerpt from Bill Warner’s book Abridged Koran where the verses of Koran are arranged in their chronological order and provided with facts from prophet Muhammad’s life, giving context for them.
CHAPTER 23 JIHAD, CONQUEST
8:13 This was because they opposed Allah and His messenger. Ones who oppose Allah and His messenger will be severely punished by Allah.
After Mohammed’s death, Abu Bakr was elected caliph (political and religious leader) to rule over Islam. He went to war against the many Muslims who wished to leave Islam after Mohammed’s death. Thousands of these apostates were killed in the Riddah wars, the war against apostasy.
The rule of political Islam in Arabia was now permanent.
Umar became the next caliph and put Mohammed’s final command into effect by expelling every Christian and Jew in Arabia. To this day there is no temple, church, synagogue, shrine or any house of worship except that of Islam in Arabia. Umar then launched the jihad and conquest of every neighbor of Arabia. The Islamic Empire was born and political Islam became a permanent part of world politics.