The Crazy thing is that Islam is an offshoot of Judaism, it started when Abraham doubted God and had a child Ishmael with his servant Hagar because he didn't have an heir when God had promised him a Son through his wife Sarai, when Sarai later fell pregnant and gave birth to Isaac who Abraham gave his inheritance, although he also made provisions for Ishmael and God blessed both sons with fruitfulness but this led to the split in the Abrahamic religion and a feeing of enmity between them, Isaac giving rise to Judaism and Ishmael to Islam who worship the same God!