Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answer updated 3 years ago
Although the fact of the existence of God is very clear for any one who thinks properly, those who need more detailed evidence can read thousands of books written by leading scholars and thinkers. You can read many books on this website al-Islam.org discussing the evidence of God's existence and the prophethood of Muhammad (SAWA).
hundreds of websites which are easily accessible on the internet have hundreds of books on these subjects.
Wassalam.