Abu Bakar As-Sidiq is one of the earliest converts to Islam (assabiqunal awwalun), a friend Rasullullah Saw., And also inducted into the first Caliph (appointed) by Muslims. He was born simultaneously with the birth of the Prophet Muhammad. in 572 AD in Mecca, derived from the descendants of Bani Taim, the tribe of Quraysh. His real name is Abi Abdullah ibni Quhaafah.

According to some historians of Islam, he was a merchant, judge with high standing, an educated and trusted as one who could interpret dreams. Under the circumstances in which the belief taught by the Prophet Muhammad SAW attract more young children, the poor, the marginalized, and the slaves, Abu Bakr's hard to accept that it is included in those who embraced Islam in the early period and also managed to invite residents mecca and other Quraysh followed him (Islam).
Abu Bakar means 'father of the girl', the father of the Prophet Muhammad's wife Aisha. Her real name was Abdul Ka'aba (meaning 'servant of the Kaaba'), which is then converted by the Prophet Mohammed Abdullah (meaning 'servant of God'). Other sources say his name was Abdullah bin Abu Quhafah (Abu Quhafah is her seat or her father's nickname). Degree of As-Sidiq (trust) given the Prophet Muhammad that he was better known as Abu Bakr al-Siddiq. As the first people who converted to Islam, Abu Bakr ordeal suffered by the As-Sidiq quite a lot. But he always remained faithful to accompany the Prophet and with him being the only friend migrated to Medina in 622 AD.
Rasullullah before his death, Abu Bakr was appointed as the priest prayed in his place. It is indicated that Abu Bakr would later replace the position of the Prophet led the congregation. After the death of Rasullullah, then through consultation between the Emigrants and the Ansar chose Abu Bakr as the first caliph, starting the era of four caliphs. Although opposed by some Shiite Muslims because they thought the Prophet had to choose Ali bin Abi Talib as his successor, Ali ibn Abi Talib but expressed loyalty and support of Abu Bakr as caliph.
Soon after he became caliph, Abu Bakr affairs much preoccupied with the suppression of rebellion and straightening a deviated creed society after the death of the Prophet. He is fighting the Al-Kazab Musailamah (Musailamah the liar), who claimed himself as the new prophet replacing Prophet Muhammad, and also collect alms to the tribes who did not want to pay him after the death of the Prophet Muhammad. They assume that the charity is a form of tribute to Rasullullah. After usainya rebellion and various internal problems, he continued his mission of Prophet Muhammad Islamic symbols to broadcast to the world. Abu Bakr sent people to the Byzantine and Sassanid trust as a mission to spread the religion of Islam. Khalid ibn Walid also successfully conquered Iraq and Syria with ease.
He became caliph in a period of 2 years. Abu Bakr died on August 23, 634 in Medina. He was buried beside the tomb Rasullullah Saw. The next position is replaced by the Caliph Umar bin Khattab.