Who confirmed the prophethood of Hazrat Muhammad (PBUH)?

When Prophet Muhammad (PBUH) got the first revelation from Angel Jibreel in Cave Hira, he was scared. He went home to his wife Khadija (RA). She took him to her cousin Waraqa ibn Nawfal. Waraqa was a Christian scholar who knew about holy books. After hearing what happened, Waraqa said this was the same message Allah sent to earlier prophets. He told Muhammad (PBUH): "You are the prophet of this people." This was the first confirmation that Muhammad (PBUH) was Allah's messenger. Waraqa was old and blind. He said he wished he could live to help the Prophet when his people would oppose him. But Waraqa died soon after. Later, Hazrat Abu Bakar (RA) and others also accepted Islam and confirmed the Prophet's message. But Waraqa was the first to recognize the truth. This story teaches us that Allah sends signs to guide people. Even a Christian scholar could see the truth of Islam. It also shows how Khadija (RA) wisely helped her husband in this difficult time.